Combine all wet ingredients in small bowl or large measuring cup. Mix well, making sure egg is fully incorporated.
Pour wet ingredients over dry ingredients and combine until just mixed.
Preheat griddle pan or skillet over medium to medium high heat.
Spray pan with cooking spray. Put two spoonfuls of batter (about 1/8 cup each) directly next to each other on the griddle, and use a spoon to swirl them together before swooping down and creating a narrow area for the bottom of the heart.
Cook until the top of the pancake has some popped bubbles. Flip and continue cooking until the underside is light brown.
Keep warm in a 200 degree F oven while preparing the rest of the pancakes.
Notes
Adapted from "Four-Grain Flapjacks" in The Joy of Cooking