Preparation Steps

• Preheat oven to 350°F (175°C). Grease one 8-inch square cake pan and one 8-inch round cake pan.
• In a large bowl, mix the cake mix, eggs, water, and vegetable oil until well combined.
• Divide the batter evenly between the prepared square and round cake pans.
• Bake for 25 to 30 minutes, or until a toothpick inserted into the center comes out clean. Let the cakes cool completely.
• To assemble the heart shape, cut the round cake in half to create two half-circles.
• Place the square cake on a serving platter oriented like a diamond. Place the flat edges of the two half-circles against the top two adjacent sides of the square to form a heart.
• In a mixer, beat the softened butter until fluffy. Gradually add powdered sugar, heavy cream, and vanilla extract, beating until smooth to make the frosting.
• Frost the entire assembled heart cake evenly and decorate as desired.