Red Velvet Brownies with Cream Cheese Frosting

Name: Red Velvet Brownies with Cream Cheese Frosting
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Cuisine: American
Ingredients: 1 1/4 cups all purpose flour; 1/2 cup unsweetened cocoa powder; 1 tablespoon cornstarch; 1/2 teaspoon kosher salt; 1 cup unsalted butter (melted); 1 3/4 cups granulated sugar; 2 teaspoons vanilla extract; 3 large eggs (room temperature ); 1 teaspoon white vinegar (optional); 2-3 teaspoons red food coloring; 4 ounces cream cheese (room temperature ); 1/4 cup unsalted butter (room temperature ); 1 1/2 cups powdered sugar; 1/2 teaspoon vanilla extract; pinch kosher salt; 1-3 teaspoons heavy cream (as needed )