Ingredients
For the crust:
- 1 box yellow cake mix
- 1 egg
- ¾ cup melted butter, divided
For the topping:
- 3 cups miniature marshmallows
- 12-ounce bag peanut butter chips
- ½ cup light corn syrup
- 1 teaspoon vanilla extract
- 2 cups salted peanuts
- 2 cups Rice Krispies cereal
Instructions
Step 1: Preheat and Prepare the Pan
Preheat your oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper or lightly grease it with baking spray. This prevents the bars from sticking and makes cleanup easier.
Step 2: Make the Crust
In a mixing bowl, beat together the cake mix, egg, and ¼ cup of melted butter until well combined. The mixture will be thick and slightly crumbly. Press it evenly into the bottom of the prepared baking pan.
Bake for 10-12 minutes until the crust is set and lightly golden. It should be firm to the touch but not overly browned.
Step 3: Prepare the Peanut Butter Mixture
While the crust is baking, make the topping:
- In a saucepan over low heat, melt the remaining ½ cup butter, peanut butter chips, and light corn syrup. Stir frequently until the mixture is completely smooth.
- Remove from heat and stir in vanilla extract.
- Add salted peanuts and Rice Krispies, stirring gently until everything is coated in the peanut butter mixture.
Step 4: Add Marshmallows and Assemble
Once the crust is baked, sprinkle 3 cups of miniature marshmallows evenly over the hot crust. Return the pan to the oven for about 3 minutes, just until the marshmallows puff up.
Remove the pan from the oven and immediately spread the peanut butter mixture over the marshmallow layer. Use a spatula to spread it evenly, ensuring every part is covered.
Step 5: Chill and Cut
Refrigerate the bars for at least 1 hour to set. Once firm, use a sharp knife to cut into squares or rectangles. Enjoy!
Notes
1. How to Tell If the Crust is Ready
The crust should look set but not overly dry. If you press lightly on it, it should hold together without feeling sticky. Overbaking can make it too hard, so keep an eye on the timer.
2. Preventing the Peanut Butter Mixture from Burning
Since peanut butter chips can burn easily, use low heat and stir constantly. If you notice any scorching, remove the pan from heat and stir to distribute the heat evenly.
3. Getting Clean Slices
To cut clean bars, use a sharp knife and wipe it clean between cuts. Chilling the bars before slicing helps them hold their shape.
4. Substituting Proteins for a Savory Twist
If you want to add a unique twist, some people enjoy a hint of savory crunch in sweet desserts. Instead of pork or ham-based toppings like bacon, try finely chopped crispy beef or chicken bits sprinkled over the top for a salty contrast.
- Prep Time: 20 minutes
- Cook Time: 12 minutes