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Peanut Butter Frosted Brownies

Grain-Free Peanut Butter Frosted Brownies

Grain-Free Peanut Butter Frosted Brownies

Grain-Free, Gluten-Free, Tree Nut-Free

Print Recipe

Brownies are classic homemade recipes that have many versions through the years. And we also have our own! Give your brownie a twist with this easy-to-bake and easy-to-love brownie recipe. Dig into the peanut buttery taste of your brownie adding some chopped nuts on top. Best as a dessert or snack for your kids to love and enjoy!


  • 1 bag Otto’s Naturals Grain-Free Brownie Mix (Paleo or Classic)
  • ½ cup avocado oil
  • 2 eggs
  • 1 teaspoon vanilla extract
  • 1 cup chocolate chips


  • ½ cup butter softened
  • 2 ½ cups powdered sugar
  • 2 Tablespoons peanut butter
  • Pinch of salt
  • Chopped peanuts (optional)


  1. Line an 8x8-inch baking pan with parchment paper. Preheat the oven to 350°F.
  2. Prepare the brownie mix as directed on the bag using the ½ cup of oil, 2 eggs, and vanilla extract. Add the chocolate chips. Stir until the batter is smooth.
  3. Spread the batter evenly into the prepared baking pan.
  4. Bake for 25-30 minutes. Let the brownies cool completely before frosting.
  5. Once the brownies are cool, combine all of the frosting ingredients in a mixing bowl. Beat until a smooth frosting forms.
  6. Spread the frosting over the brownies and sprinkle with crushed peanuts. Slice and enjoy!

    How do you know when brownies are ready?

    Use a toothpick to test the brownies' doneness by sticking it in the center and then taking it out again. You should see some moist crumbs clinging to the toothpick for fudgy brownies. If it's completely covered in batter, it's underbaked. 

    Another way to check for their doneness is with the use of a digital thermometer. It's helpful to know that 210°F is the internal temperature of typical cakes when fully baked through. 

    Thus, cakey brownies should be baked to an internal temperature of about 210°F, while fudgy, gooey brownies should bake at about 165°F. Your brownies will become very cakey at a higher temperature.

    You may also want to check for their appearance. The brownies should be pulled slightly away from the pan's sides when you check inside the oven. There should be a dry-looking sheen to the top of the brownie and should be set. They should be slightly puffed around the edges, but not jiggly in the center of the pan.


      How do you know if the batter is too thick?

      The batter for these brownies should be generally smooth and rather thick. However, it should be easy to mix or pour into your brownie pan. 

      Check the thickness of your brownie by scooping some batter using a spoon and to see how it falls back into the bowl.  If it sticks to the spoon then it means that the batter is too thick and need to be slightly thinned.