Place liners in a muffin tin and fill with batter. In each cup, slip a ball of foil between the filled liner and the tin. This will create a notch at the cupcake’s top, shaping it into a “heart.” Bake as usual.
These sweet little cupcakes only look complicated. They’re actually really easy, especially when you start with Betty’s sugar cookie and red velvet cake mixes! Click through for the step-by-step instructions, tips and photos!