Preheat the oven to 350°F. Grease a 9x9 square baking pan with cooking spray and line it with two small pieces of parchment paper and set aside.
Make the brownies:
Use a wooden spoon or spatula to mix the cake mix, melted butter, and eggs in a large bowl. The batter will be thick, almost like a thick cookie dough.
Press the batter evenly into the baking pan, then bake for 18-20 minutes or until a toothpick inserted in the middle of the brownies comes out clean. Let the brownies cool.
Make the glaze:
Once the brownies are cool, combine the powdered sugar, milk, strawberry preserves, and salt in a small mixing bowl until the glaze is smooth and there are no powdered sugar lumps.
Pour the glaze over the brownies and let them rest until the glaze sets, about 15 minutes.
Slice and serve at room temperature.
Refer to the article above for more tips and tricks.The calories shown are based on the bars being cut into 9 pieces, with 1 serving being 1 glazed bar. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information. The information in the nutrition box are calculated through a program and there is room for error. If you need an accurate count, I recommend running the ingredients through your favorite nutrition calculator.**