Bake your brownies in a 9x13 pan. You can use a box mix or make them from scratch—whatever works for you. Let them cool completely before moving to the next step.
Cut the brownies into hearts using a heart-shaped cookie cutter. Try to cut close to the edges so you don’t waste any of the brownies.
Melt the white chocolate chips in a microwave-safe bowl. Heat them in 30-second bursts, stirring in between, until smooth and fully melted. Drizzle the melted white chocolate over each brownie heart using a spoon. Start in the middle and spread it gently toward the edges.
Quickly add sprinkles while the chocolate is still soft. It sets fast, so don’t wait too long.
Let the chocolate set completely. Once it's firm, your brownie hearts are ready to enjoy!