Heart-Shaped Cupcake Mold. Who doesn't love a miniature cake in a cup? Host a party this Valentine’s Day and give everyone a sweet heart to share with their valentine using this flexible silicone 9 1/2" heart-shaped cupcake mold. Each mold makes six heart-shaped 2 1/2" cupcakes. Silicone mold can be put into the oven or microwave directly from freezer. Its non-stick surface rinses clean and is dishwasher safe.