1-Preheat and prepare: Creating these Snickers brownies is a fun process that results in a decadent treat. Start by preheating your oven to 350°F and lining a 9×13-inch baking dish with parchment paper for easy removal. This step ensures your brownies come out cleanly and helps with the layering process later.

2-Whisk and mix: Next, whisk together the dry ingredients for the brownie layer: 1 ½ cups all-purpose flour, 1 tablespoon cornstarch, ⅓ cup Dutch-processed cocoa powder, ½ teaspoon baking powder, and ¼ teaspoon salt. In a separate bowl, use a stand mixer to beat 4 large eggs at room temperature, 2 cups granulated sugar, ¾ cup unsalted butter at room temperature, and 2 teaspoons vanilla extract until the mixture is light and fluffy. Gradually add the dry ingredients to the wet ones, mixing gently until just combined.

3-Bake brownie layer: Pour the batter into your prepared pan and bake for 30-35 minutes, or until the edges are set but the center remains moist. Let it cool at room temperature, then chill in the refrigerator for 2 hours to firm up.

4-Prepare nougat layer: For the nougat layer, heat ¼ cup unsalted butter, 1 cup granulated sugar, and ¼ cup heavy whipping cream in a saucepan until it boils and reaches 246°F on a candy thermometer. Remove from heat and stir in ¼ cup creamy peanut butter, 1 jar marshmallow fluff, and 1 teaspoon vanilla extract until smooth, then pour over the chilled brownies and top with 2 cups salted peanuts, pressing them gently into place.

5-Prepare caramel layer: While that chills, prepare the caramel layer by melting 1 bag (11 ounces) caramel bits with ¼ cup heavy whipping cream in the microwave in 30-second intervals until smooth. Spread this over the nougat and peanuts, then chill for 5 minutes.

6-Prepare chocolate layer: Finally, for the chocolate layer, melt 2 cups milk chocolate chips with 1 teaspoon vegetable oil in the microwave in 30-second bursts until smooth, and spread it evenly over the caramel. Chill for 15-20 minutes until firm, and serve slightly cooled for the best texture.