Heart Cake Serving Guide (Party-Size Servings) 5-inch Heart Cakes • Single layer: 2–4 servings • 2 layers: 4–6 servings • 3 layers: 6–8 servings 6-inch Heart Cakes • Single layer: 4–6 servings • 2 layers: 8–10 servings • 3 layers: 12–14 servings 7-inch Heart Cakes • Single layer: 6–8 servings • 2 layers: 12–14 servings • 3 layers: 18–20 servings 8-inch Heart Cakes • Single layer: 8–10 servings • 2 layers: 14–16 servings • 3 layers: 20–24 servings 9-inch Heart Cakes • Single layer: 8–10 servings • 2 layers: 14–18 servings • 3 layers: 22–26 servings 10-inch Heart Cakes • Single layer: 10–12 servings • 2 layers: 18–22 servings • 3 layers: 26–30 servings