Air Fryer Buckeye Brownies
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If you love peanut butter and chocolate together, Air Fryer Buckeye Brownies are about to become your new obsession. The brownie base is dense and fudgy, topped with a thick sweet peanut butter layer, then finished with smooth melted chocolate that sets into the most beautiful top coat. Three layers of pure deliciousness in every square.
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I make these for potlucks, bake sales, and holiday dessert spreads because they slice into clean, beautiful squares that hold up perfectly for gifting and sharing. They’re rich enough that a small square goes a long way, which makes them great for feeding a crowd. Store in an airtight container at room temperature for up to 3 days, refrigerate for up to a week, or freeze for up to 2 months.
Ingredients You’ll Need
You’ll need all the ingredients shown in the photograph below.
How to Make Air Fryer Buckeye Brownies with Step-By-Step Instructions
Scroll down for the full recipe card containing a full printable recipe and measurements in both US customary and metric units.
Here’s how to make this fudgy air fryer buckeye brownies recipe from start to finish with no stress and no oven!
Mix and Bake the Brownie Base
In a large or medium bowl, prepare the brownie batter according to the box directions using the boxed brownie mix, eggs, and butter. Grease or line an 8×8-inch square baking pan with parchment paper, leaving a bit of overhang on the sides, and pour in the batter.
Spread batter all the way to the edges and make sure the prepared pan fits in your air fryer basket. Air-fry at 350°F (180°C) for 15 minutes. Check doneness with a toothpick inserted into the center. If it comes out with a few moist crumbs, it’s ready.
Cool completely in the pan, or let the brownies cool slightly for a few minutes before carefully transferring to a cooling rack to finish cooling using the parchment overhang. Rushing this step will cause the peanut butter layer to slide right off, so be patient here.
DO MORE WITH YOUR
AIR FRYER
This eBook is a collection of 86 recipes I make again and again in my own kitchen. If you love good food and easy instructions, this book was made for you.
Immediate eBook download. No physical book available.
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∙ Broccoli Cheddar Soup
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Make the Creamy Peanut Butter Layer
Add the butter and creamy peanut butter to a large microwave-safe prep bowl. Microwave for 30 to 60 seconds until melted, then stir until completely smooth. Add the confectioners’ or powdered sugar and mix until fully combined and creamy.
Spread the peanut butter mixture evenly over the cooled brownie layer using an offset spatula for a clean, even layer.
Melt and Pour the Chocolate Topping
In a separate microwave-safe bowl, combine the remaining 6 tablespoons of butter and the semi-sweet chocolate chips or dark chocolate chips for a darker chocolate flavor.
Microwave in 30-second intervals, stirring well between each, until the chocolate is fully melted and smooth. Pour the melted chocolate over the peanut butter layer and use your spatula to spread it evenly all the way to the edges.
Set and Slice
Let the brownies sit at room temperature or refrigerate for 30 to 60 minutes until the chocolate layer is completely firm. Once set, cut into squares using a sharp chef’s knife. For cleaner cuts, run the knife under warm water and wipe it dry between slices.
Serve and enjoy!
These air-fried, homemade brownies travel really well once the chocolate layer has fully set, making them a great option for potlucks, bake sales, holiday gatherings, or gifting. Let them firm up completely in the fridge before stacking or covering.
Layer the squares between sheets of parchment paper in an airtight container to keep them from sticking together. If you’re transporting them somewhere warm, keep the container in a cooler or insulated carrier to prevent the chocolate from softening.
Equipment
- Square baking pan 8×8-inch or one that fits in your air fryer greased or lined with
Ingredients
For the Brownie Mix:
- 1 package fudge brownie mix 13×9-inch pan size
- 3 eggs
- ½ cup butter
For the Buckeye Brownies:
- ½ cup butter plus 6 tablespoons butter divided
- 1 cup creamy peanut butter
- 2 cups confectioners’ sugar
- 6 ounces semisweet or dark chocolate chips
Instructions
- Prepare the brownie batter according to the package instructions.1 package fudge brownie mix, 3 eggs, ½ cup butter
- Grease an 8×8-inch baking pan and pour in the batter. Bake in the air fryer at 350ºF (180°C) for 15 minutes (adjust time slightly if needed—check doneness with a toothpick). Let the brownies cool completely in the pan.
- In a large microwave-safe bowl, combine ½ cup butter and 1 cup peanut butter. Microwave for 30–60 seconds, until melted. Stir until smooth.1 cup creamy peanut butter
- Add 2 cups confectioners’ sugar and mix until fully combined and creamy. Spread evenly over the cooled brownies.2 cups confectioners’ sugar
- In another microwave-safe bowl, add 6 tablespoons of butter and chocolate chips. Microwave in 30-second intervals, stirring between each, until melted and smooth.½ cup butter plus 6 tablespoons butter, 6 ounces semisweet or dark chocolate chips
- Pour and spread the chocolate evenly over the peanut butter layer.
- Let the brownies sit at room temperature or refrigerate for 30–60 minutes until firm. Cut into squares and enjoy!
Notes
Nutrition
DO MORE WITH YOUR
AIR FRYER
This eBook is a collection of 86 recipes I make again and again in my own kitchen. If you love good food and easy instructions, this book was made for you.
Immediate eBook download. No physical book available.
∙ Cheesy Egg Bites
∙ Broccoli Cheddar Soup
∙ Asparagus Casserole
∙ Crack Chicken Casserole
∙ Coffee Cake
...and much more!
Includes ad-free recipes like:
How to Store Leftovers
Once fully set and sliced, store any leftover brownies in an airtight container in the refrigerator for up to one week. The cold temperature helps the layers stay firm and makes each square easier to slice and serve straight from the fridge.
Stack them with a sheet of parchment paper between layers so the chocolate doesn’t stick. You can also keep them at room temperature for up to 3 days if your kitchen isn’t too warm.
For longer storage, these air fryer brownies freeze beautifully for up to two months. Wrap individual squares in plastic wrap, then place them in a freezer bag or container. Thaw overnight in the fridge or at room temperature for about an hour before serving.
What to Serve With Air Fryer Buckeye Brownies
Rich, layered air fryer desserts like these pair really well with something cold and creamy on the side. A scoop of vanilla ice cream or a drizzle of warm caramel sauce turns each square into a proper dessert plate.
Cold milk is genuinely the perfect drink alongside them, and if you’re serving a crowd, a hot chocolate bar or coffee station alongside a platter of these fudgy brownies makes for a really satisfying dessert spread.
For a full dessert table, pair them with sugar cookies, snickerdoodles, pop tarts, or a fruit platter to balance the richness. Mini cheesecakes or no-bake desserts round out the spread nicely without competing with the bold peanut butter and chocolate flavors.
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