Preheat your oven to 350°F (175°C) and grease a baking dish or line it with parchment paper.

In a mixing bowl, combine softened butter, granulated sugar, and cocoa powder until blended. Add eggs one at a time, mixing after each addition.

Fold in flour and salt gently until just combined. Pour into the prepared dish and bake for 25–30 minutes or until a toothpick comes out with moist crumbs.

While the brownies cool, beat together softened butter and 1 cup of powdered sugar until smooth and creamy. Add vanilla and a splash of milk, mixing well.

Gradually add remaining powdered sugar, adjusting with extra tablespoons as needed.

Stir in food coloring until you achieve the desired colors. Add more milk if the frosting is too thick.

Once cooled, spread a generous layer of frosting on the brownies and decorate with sprinkles and chocolate bunnies.

Allow the brownies to set for about 15 minutes, then cut into squares and serve.