3-Ingredient Peanut Butter Marshmallow Bars
If you’re looking for a quick and delicious dessert, these 3-Ingredient Peanut Butter Marshmallow Bars are the perfect solution. They are easy to make and require minimal effort, which is great for any home cook. With just three simple ingredients, you can create a sweet treat that is sure to please everyone.
Why Make This Recipe
This recipe is perfect for busy days when you want something sweet but don’t have a lot of time to bake. The combination of peanut butter and marshmallow creates a delightful flavor and texture that is hard to resist. Plus, it’s a great way to use up some cookie dough if you have it on hand. You can whip these bars together in no time and enjoy a delicious dessert with little fuss.
How to Make 3-Ingredient Peanut Butter Marshmallow Bars
Ingredients
- 1 roll peanut butter cookie dough (about 16.5 ounces)
- 1 jar marshmallow creme (7 ounces)
- 1/2 cup creamy peanut butter
Directions
- Preheat the oven to 350 degrees F and lightly grease an 8×8-inch glass baking dish.
- Press the peanut butter cookie dough evenly into the bottom of the prepared dish to form the crust.
- Bake for 12 to 15 minutes, until the cookie base is puffed and lightly golden around the edges.
- Spoon the marshmallow creme over the hot crust and gently spread it as evenly as you can.
- Warm the peanut butter just enough to loosen it, then drizzle it over the marshmallow layer.
- Let the bars cool completely before cutting into squares and serving.
How to Serve 3-Ingredient Peanut Butter Marshmallow Bars
These bars are best served chilled or at room temperature. You can cut them into squares and plate them for a party. They also make a great afternoon snack or a sweet treat for kids after school.
How to Store 3-Ingredient Peanut Butter Marshmallow Bars
Store any leftover bars in an airtight container at room temperature for up to 3 days. If you want to keep them longer, you can refrigerate them for up to a week. Just remember to let them sit at room temperature for a few minutes before serving if they were stored in the fridge.
Tips to Make 3-Ingredient Peanut Butter Marshmallow Bars
- Make sure to press the cookie dough firmly into the pan to create a solid crust.
- If you want a more peanut buttery taste, you can add some chopped peanuts on top of the marshmallow layer before drizzling the peanut butter.
- Heating the peanut butter in the microwave for about 20 seconds can make it easier to drizzle.
Variation
You can add chocolate chips to the peanut butter layer for a chocolatey twist. Just sprinkle them on top of the marshmallow before the peanut butter drizzle.
FAQs
1. Can I use natural peanut butter for this recipe?
Yes, you can use natural peanut butter, but it may be harder to drizzle if it’s too thick.
2. Can I make these bars gluten-free?
Yes, you can use gluten-free cookie dough to make these bars gluten-free.
3. How can I make these bars more decadent?
You can top them with a drizzle of melted chocolate or sprinkle some crushed cookies on top for added crunch.
Enjoy making and sharing these easy and delicious 3-Ingredient Peanut Butter Marshmallow Bars!

3-Ingredient Peanut Butter Marshmallow Bars
Ingredients
Method
- Preheat the oven to 350 degrees F and lightly grease an 8×8-inch glass baking dish.
- Press the peanut butter cookie dough evenly into the bottom of the prepared dish to form the crust.
- Bake for 12 to 15 minutes, until the cookie base is puffed and lightly golden around the edges.
- Spoon the marshmallow creme over the hot crust and gently spread it as evenly as you can.
- Warm the peanut butter just enough to loosen it, then drizzle it over the marshmallow layer.
- Let the bars cool completely before cutting into squares and serving.







