Preheat the oven to 350°F (175°C) and grease an 8x8 baking dish.
In a bowl, combine the strawberry cake mix, eggs, and oil until a thick batter forms.
Spread the batter evenly in the prepared dish.
Bake for 18-22 minutes or until edges are set and a toothpick comes out clean.
Let cool completely before glazing.
In a small bowl, whisk together powdered sugar, milk, and vanilla until smooth.
Drizzle the glaze over cooled brownies, let set, then cut into squares.