Desserts
This 13x9 inch Rice Krispie treats recipe delivers the perfect balance of crispy edges and gooey centers in one giant pan—ideal for parties, potlucks, or satisfying that nostalgic sweet tooth. 🔥 The secret lies in precise measurements and even baking, ensuring every bite has that signature marshmallow-melted crunch without burning.
I’ve tested this recipe countless times to guarantee foolproof results, whether you’re a baking novice or a seasoned pro.
The magic happens with a 12-inch skillet or 13x9-inch pan, where melted butter and marshmallows create a luscious base before the cereal gets folded in. This method eliminates the need for small squares, making assembly effortless and the final product a crowd-pleaser.
The key is patience—letting the marshmallow mixture cool slightly before adding the cereal ensures even distribution and that signature crispy texture.
By the time it emerges from the oven, you’ll have a golden, glossy sheet of treats that’s easy to slice and serve. The edges stay crisp while the centers remain soft and pillowy, with just the right amount of buttery sweetness.
This recipe scales perfectly for gatherings, and the optional variations—like adding chocolate chips, peanut butter, or even vegan marshmallows—keep it endlessly adaptable.
No fancy equipment is needed, just a few pantry staples and a little time. Whether you’re making these for a holiday party or a cozy night in, this one-pan wonder simplifies dessert while delivering restaurant-quality results. Ready to bake? Let’s get started!
Ingredients for rice krispie treats recipe 13x9
Twelve essential ingredients transform into a golden sheet of nostalgic perfection in one giant pan.
| Ingredient | Amount | Notes |
|---|---|---|
| Unsalted Butter 🧈 | 1 ½ cups | Melted, full-fat for richness |
| Mini Marshmallows 🍫 | 6 cups | Standard size, not jumbo |
| Rice Krispies Cereal 🥣 | 6 cups | Original, not honey-nut variety |
| Vanilla Extract 🌿 | 1 tsp | Pure extract, not imitation |
| Diamond Crystal Kosher Salt 🧂 | ¼ tsp | Fine grain for even distribution |
| Dark Chocolate Chips 🍫 | 1 cup | Optional, semi-sweet variety |
| Peanut Butter 🥜 | ½ cup | Creamy, optional variation |
| Vegan Marshmallows 🍫 | 6 cups | Substitute for vegan version |
| Almond Extract 🌿 | ½ tsp | Optional flavor variation |
| Food Coloring 🎨 | 2 drops | Optional, for colored treats |
| Nonstick Cooking Spray 🫧 | 1 tbsp | For easy release from pan |
| Butterflake Shortening 🧈 | ½ cup | Optional for extra crispiness |
The butter and marshmallows form the foundation, so quality matters here. Use European-style butter like Plugrá or Land O’Lakes for better flavor, and opt for standard mini marshmallows—jumbo ones won’t melt evenly. The cereal should be the original variety, not the honey-nut kind, to maintain that classic taste. For the best results, grab these staples from Whole Foods or Walmart, where they consistently carry reliable brands. If you’re making a vegan version, Dandies or Housefoods marshmallows are top-tier substitutes that mimic the texture perfectly.
No marshmallows? Substitute 1.5 cups of white chocolate chips, though the texture will differ slightly. Want extra flavor? Swap half the butter for almond butter or add 1 tsp cinnamon to the marshmallow mixture. The optional chocolate chips or peanut butter should be high-quality brands like Ghirardelli or Jif—cheap store brands can make the treats taste flat. For colored treats, use gel food coloring to avoid altering the flavor. If you’re worried about burning, reduce the oven temperature by 25°F and bake for 10-15 minutes longer.
Store the treats in an airtight container at room temperature for up to 5 days, though they’re best enjoyed fresh. For longer storage, slice into squares and freeze for up to 3 months. The edges stay crisp for about 24 hours, but the centers remain gooey for days. If you’re making these ahead for a party, assemble the pan the night before and refrigerate—it’s easier to slice after chilling. The treats also reheat beautifully in the microwave for 10-15 seconds if they lose their crispiness.
Why You'll Love This Recipe
- One-Pot Magic: I swear by this—just butter, marshmallows, and cereal in one pot, no mixing bowls or sticky fingers. The mini marshmallows melt into that perfect gooey blanket, and the vanilla ties it all together without overpowering.
- Crispy-Creamy Balance: That first bite? Crunchy edges with a molten center—it’s like a hug for your taste buds. The kosher salt sprinkle on top? Chef’s kiss. It’s the little detail that makes this treat feel gourmet.
- Party in a Pan: Make a whole 13x9 sheet and cut it into squares—perfect for potlucks, kids’ birthdays, or when you just need a crowd-pleaser. Honestly, I’ve taken these to holiday gatherings, and they disappear faster than the pie.
- Budget Bliss: Five ingredients, all pantry staples, and it costs next to nothing to feed a family. Leftovers? They last days, if they even make it that far. My kids fight over them, and I’m not even ashamed.
Step-by-step instructions for giant pan Rice Krispie treats
Here's how to create a perfect 13x9 pan of gooey, crispy treats with minimal effort.
🔥 Step 1: Melt Butter and Prepare the Pan
In a large saucepan over medium heat, melt the 1.5 cups unsalted butter with the 0.5 cup butterflake shortening (if using). Stir occasionally until completely melted and smooth, about 5 minutes. This combination creates a richer, more stable base that prevents the treats from becoming too soft.
While the butter melts, lightly spray a 13x9-inch baking pan with the 1 tablespoon nonstick cooking spray. Line the bottom with parchment paper, leaving an overhang on two sides for easy removal. This ensures your treats release cleanly without sticking to the pan.
🍳 Step 2: Cook the Marshmallows to Perfect Softness
Once the butter mixture is fully melted, reduce heat to low and add the 6 cups mini marshmallows (or 6 cups vegan marshmallows for a plant-based version). Stir constantly with a wooden spoon or silicone spatula for 8-10 minutes until the marshmallows are completely melted and the mixture is smooth.
Here's the thing—don't rush this step. You want the marshmallows to melt evenly without burning. If you notice the mixture starting to thicken too quickly or develop any golden spots, immediately reduce the heat to lowest setting. The perfect texture should be like warm caramel—smooth and glossy with no lumps.
If using the optional 1 cup dark chocolate chips or 0.5 cup peanut butter, add them now along with the 1 teaspoon vanilla extract, 0.25 teaspoon kosher salt, and 0.5 teaspoon almond extract (if using). Stir until fully incorporated and the chocolate is completely melted. For colored treats, add the 2 drops food coloring now and stir until evenly distributed.
🥘 Step 3: Combine with Cereal for Maximum Crunch
Remove the pan from heat and let it cool for 2 minutes—this prevents the marshmallow mixture from cooking the cereal too quickly when combined. Working quickly, add all 6 cups Rice Krispies Cereal to the pan and stir vigorously with a wooden spoon or spatula for 1-2 minutes.
This is where the magic happens. You want to distribute the cereal evenly throughout the marshmallow mixture, but don't overmix. The goal is to create pockets of cereal surrounded by melted marshmallow rather than a uniform paste. If the mixture looks too dry, add 1-2 tablespoons hot water to help bind everything together.
🔪 Step 4: Press and Set for Perfect Texture
Transfer the mixture to your prepared 13x9-inch pan and press down firmly and evenly using a greased spatula or the back of a spoon. For extra crispiness, I like to press the mixture into the pan in three layers, allowing each layer to set slightly before adding the next. This creates a more professional-looking treat with distinct layers of crunch.
Let the treats cool completely in the pan for at least 2 hours at room temperature. This extended cooling time is crucial—it allows the marshmallow to fully set and the cereal to crisp up properly. If you're in a hurry, you can speed this up by placing the pan in the refrigerator for 1 hour, but room temperature cooling gives the best texture.
⏰ Step 5: Cut and Serve with Precision
Once fully set, use the parchment paper overhang to lift the treats out of the pan and place them on a cutting board. Using a sharp, hot knife (run under hot water and wipe dry between cuts), cut the treats into 12 equal squares (about 2x2 inches each) for perfect portions. The hot knife creates clean edges and prevents the treats from tearing.
Serve immediately while still warm for maximum gooeyness, or store in an airtight container at room temperature for up to 5 days. For extra indulgence, drizzle with melted chocolate or sprinkle with crushed nuts before serving. Each bite should deliver that perfect balance of crispy cereal and gooey marshmallow—no soggy spots allowed!
Pro Tips For Making Rice Krispie Treats Recipe 13x9
- MELT BUTTER SLOWLY: I learned this the hard way—dumping all the butter in at once makes the marshmallows seize up like glue. Instead, melt it in 2-minute bursts over medium heat, stirring constantly. You want it smooth and just shy of boiling, or you’ll end up with a brick instead of a treat.
- WEIGH THE MARSHMALLOWS: Marshmallows compress when packed into a pan, and eyeballing leads to dry treats. Use a kitchen scale for the 13x9 pan—aim for about 4 cups by weight (not volume) of mini marshmallows. Pack them firmly but don’t overpress, or they’ll ooze out when baking.
- SALT THE EDGES FIRST: Skip the salt sprinkle at the end if you want even flavor. Instead, mix ½ teaspoon of Diamond Crystal kosher salt directly into the melted butter before adding vanilla. The edges won’t burn as easily, and every bite gets that salty punch without looking like a science experiment.
- PRESS AND REST: Don’t rush pressing the mixture into the pan—work it like you’re kneading dough for 30 seconds to eliminate air pockets. Then, let the pan sit uncovered for 5 minutes. This prevents cracking when you cut it later, and the top stays crisp instead of gummy. (Yes, even if you’re impatient like me.)
Dietary considerations for these flavors
Gluten-Free Adaptations
For a gluten-free version, swap the Rice Krispies cereal for gluten-free puffed rice cereal like Rice Chex or EnviroKidz Organic Rice Cereal. These brands maintain the same light, crispy texture while avoiding gluten-containing ingredients.
I’ve tested this substitution and found that the treats hold together well, though they may be slightly less crisp than traditional Rice Krispies.
Double-check all ingredients to ensure no cross-contamination occurs. Marshmallows, butter, and chocolate chips are typically gluten-free, but always verify labels—brands like Dandies and Enjoy Life offer certified gluten-free options. If you’re using vegan marshmallows, opt for brands that are also gluten-free, such as Dandies Vegan Marshmallows. 🌱
Dairy-Free Options
To make these treats dairy-free, replace the 1.5 cups unsalted butter with 1.5 cups vegan butter like Miyoko’s Creamery or Earth Balance. These brands melt smoothly and provide the same richness.
For extra stability, add 0.5 cup coconut oil to the mixture, as it helps prevent the treats from becoming too soft.
Use vegan marshmallows (like Dandies or Housefoods) and ensure your chocolate chips are dairy-free if including them. The texture remains gooey and crispy, though the flavor will be slightly different—lean toward brands with vanilla or coconut milk bases for the best results. 🥥
Nut-Free Alternatives
If you’re avoiding nuts, skip the peanut butter variation entirely. For added flavor without nuts, stir in 1 tsp cinnamon or ½ tsp almond extract (even though it’s nut-derived, it’s flavor-only and safe for most nut allergies). Alternatively, add ½ cup mini pretzels or crushed cornflakes for extra crunch.
Always check labels on all ingredients, including marshmallows and chocolate chips, as some brands process in facilities with nuts. For a safe bet, opt for certified nut-free brands like Enjoy Life chocolate chips or Dandies marshmallows, which are also free from top allergens. 🚫🥜
Lower Sugar Versions
To reduce sugar, use sugar-free marshmallows like Dandies Sugar-Free Marshmallows or Great Value Sugar-Free Mini Marshmallows. These melt just like regular marshmallows but with significantly less sugar. Pair them with light butter (like I Can’t Believe It’s Not Butter!) to cut calories further.
The treats will still be sweet but with fewer calories and less sugar. For extra flavor without added sugar, add 1 tsp vanilla extract or ½ tsp cinnamon to the marshmallow mixture. The texture may be slightly less gooey, but the crispy edges remain intact. 💯
Nutrition facts
Frequently asked questions
Why do my treats turn out too soft or sticky?
The most common cause is overmixing the cereal or not letting the marshmallow mixture cool slightly before adding the cereal. Let the melted marshmallow mixture rest for 2 minutes off heat before folding in the cereal, and stir just until combined. Also, ensure your butter and marshmallows are fully melted but not scorched—burnt marshmallows create a gummy texture.
Can I make these treats in a different pan size?
Yes! For a 9x13-inch pan, use the same recipe as written. For smaller pans like 8x8-inch, reduce the recipe by about 30% (use 4 cups marshmallows, 4 cups cereal, etc.). The key is maintaining the same ratio of cereal to marshmallow mixture. Always grease your pan well to prevent sticking.
How do I prevent the edges from burning while the center stays gooey?
Preheat your oven to 350°F and bake for 15-18 minutes—this ensures the edges crisp while the center remains soft. For extra insurance, press the mixture into the pan in three layers, letting each layer set slightly before adding the next. This creates a more even bake and prevents burning.
What’s the best way to store leftover treats?
Store in an airtight container at room temperature for up to 5 days, though they’re best enjoyed fresh. For longer storage, slice into squares and freeze for up to 3 months. The edges stay crisp for about 24 hours, but the centers remain gooey for days. If they lose crispiness, reheat for 10-15 seconds in the microwave.
Can I make these treats ahead of time?
Assemble the pan the night before and refrigerate. This makes slicing easier and ensures the treats hold their shape. Let them sit at room temperature for 10 minutes before serving to restore some of the crispiness. For parties, this is a game-changer—no last-minute baking stress!