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Peanut Butter Mousse Brownies

These Peanut Butter Mousse Brownies feature a fudgy brownie base topped with a rich, creamy peanut butter mousse, blending deep chocolate flavors with smooth peanut butter for a cozy dessert experience.
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Prep Time 25 minutes
Cook Time 35 minutes
Total Time 1 hour
Servings: 16 servings
Course: Dessert, Snack
Cuisine: American
Calories: 300
Ingredients Method Notes

Ingredients
  

Brownie Base
  • 1.5 cups all-purpose flour For the perfect structure; recommended brand: Bob's Red Mill.
  • 1 tablespoon cornstarch Adds a lovely lightness.
  • 0.33 cups Dutch-processed cocoa powder Rich chocolaty flavor; recommended brand: Ghirardelli.
  • 0.5 teaspoon baking powder For just enough rise.
  • 0.25 teaspoon kosher salt Enhances sweetness.
  • 4 large eggs Room temperature for smoother batter.
  • 2 cups granulated sugar Makes these brownies addictive!
  • 0.75 cups unsalted butter Room temperature; recommended brand: Kerry Gold.
  • 2 teaspoons vanilla extract Use real extract for the best flavor.
Peanut Butter Mousse
  • 1 recipe peanut butter mousse Prepared in the upcoming recipe.
Garnishes
  • Chopped peanuts For garnish; adds texture.
  • Chocolate syrup For garnish; just because.
  • Peanut butter, melted More is always better for garnish!

Method
 

Preparation
  1. Preheat the oven to 350°F (175°C) for even baking.
  2. Line a 9×13-inch baking dish with parchment paper, ensuring it goes up the sides. Lightly grease the paper with butter or cooking spray.
  3. In a large bowl, whisk together the flour, cornstarch, cocoa powder, baking powder, and salt. Set aside.
  4. In a stand mixer, combine the eggs, sugar, room temperature butter, and vanilla extract. Beat on medium speed for 4-5 minutes until light and fluffy.
  5. Gradually add the flour mixture to the wet ingredients on low speed until just combined.
Baking
  1. Pour the brownie batter into the prepared baking dish. Bake for 30-35 minutes.
  2. Let the brownies cool completely in the pan.
Assembly
  1. Spoon the prepared peanut butter mousse over the brownies and evenly spread it.
  2. Top with drizzles of chocolate syrup, chopped peanuts, and melted peanut butter.

Notes

Store leftovers in a sealed container at room temperature for up to 3 days or refrigerate for a week. Can also be frozen for up to three months.