Fudgy Oat Brownies Recipe photo by Taste of Home
Total Time
Prep: 30 min. Bake: 35 min. + cooling
These cakelike brownies have a rich, crunchy oat crust and a smooth homemade chocolate frosting. A packaged brownie mix makes the recipe easy to prepare. You can make it even easier by using canned frosting. —Diana Otterson, Canandaigua, New York

Updated: Jan. 03, 2024

Fudgy Oat Brownies

Prep Time 30 min
Cook Time 35 min
Yield 3 dozen.

Ingredients

  • 1-1/2 cups quick-cooking oats
  • 3/4 cup all-purpose flour
  • 3/4 cup packed brown sugar
  • 1/4 teaspoon baking soda
  • 1/4 teaspoon salt
  • 3/4 cup butter, melted
  • 1 package fudge brownie mix (13x9-inch pan size)
  • FROSTING:
  • 3 tablespoons butter
  • 1-1/2 ounces unsweetened chocolate
  • 2-1/4 cups confectioners' sugar
  • 3 to 4 tablespoons hot water
  • 1-1/2 teaspoons vanilla extract

Directions

  1. In a large bowl, combine the oats, flour, brown sugar, baking soda and salt. Stir in butter until combined. Press into an ungreased 13x9-in. baking pan. Bake at 350° for 10-11 minutes or until puffed and edges are lightly browned.
  2. Meanwhile, prepare brownie mix according to package directions for cakelike brownies. Spread batter over crust. Bake 25-30 minutes longer or until a toothpick inserted in the center comes out clean.
  3. For frosting, in a microwave-safe bowl, melt butter and chocolate; stir until smooth. Immediately stir in the confectioners' sugar, 2 tablespoons water and vanilla until smooth. Add remaining water as desired; stir until smooth. Immediately spread over brownies. Cool on a wire rack until firm. Cut into 36 bars.

Nutrition Facts

1 brownie: 217 calories, 11g fat (4g saturated fat), 29mg cholesterol, 131mg sodium, 29g carbohydrate (20g sugars, 1g fiber), 2g protein.

These cakelike brownies have a rich, crunchy oat crust and a smooth homemade chocolate frosting. A packaged brownie mix makes the recipe easy to prepare. You can make it even easier by using canned frosting. —Diana Otterson, Canandaigua, New York