- Grease a 15x10x1-inch baking pan; set aside. In a large bowl, stir together flour, granulated sugar, baking soda, and the 1/2 teaspoon salt; set aside. In a medium saucepan, combine the water, 1/2 cup butter, the oil, and 1/4 cup cocoa powder. Heat just to boiling, stirring to melt butter; add hot liquid to flour mixture. Beat with an electric mixer on low speed just until dry ingredients are moistened. Add the 1/2 cup buttermilk, the eggs, and 1 teaspoon vanilla. Beat on low speed for 1 minute. (Don't overbeat.) (Batter will be thin.)
- For frosting, in a large bowl, combine powdered sugar and salt; set aside. In medium saucepan, combine 1/2 cup butter, the 1/3 cup buttermilk, and 1/4 cup cocoa powder; heat and stir over medium heat until butter is melted. Pour hot buttermilk mixture over powdered sugar mixture. Add 1 teaspoon vanilla. Beat with an electric mixer on low speed just until combined; beat on medium speed until smooth. By hand, stir in nuts, if desired. Carefully pour the warm frosting over the warm brownies; spread evenly. Cool completely. Cut into bars. Makes about 48 brownies.
From the Test Kitchen
To make 1 cup sour milk, place 1 tablespoon lemon juice or vinegar in a glass measuring cup. Add enough milk to make 1 cup total liquid; stir. Let the mixture stand in a warm place for 5 minutes before using. Use 1/2 cup of the sour milk in batter and 1/3 cup in frosting; discard remaining.
1-1/2 other carbohydrate, 1/2 fat.
Nutrition Facts (Grandma's Brownies)
- Per serving:
- 150 kcal ,
- 7 g fat
- (3 g sat. fat ,
- 20 mg chol. ,
- 102 mg sodium ,
- 22 g carb. ,
- 0 g fiber ,
- 1 g pro.