01 -
Preheat oven to 350°F. Grease an 8x8-inch baking pan and line with parchment paper.
02 -
In a large bowl, whisk together strawberry cake mix, eggs, vegetable oil, and vanilla extract until mixture is smooth and thick.
03 -
Spread batter evenly into the prepared baking pan. Bake for 20 to 25 minutes, or until a toothpick inserted in the center comes out clean.
04 -
Remove pan from oven and allow brownies to cool completely in the pan before applying frosting.
05 -
In a medium bowl, beat together powdered sugar, softened butter, milk, and vanilla extract until the mixture is creamy and smooth.
06 -
Evenly spread frosting over the cooled brownies. Cut into squares and serve.