Special equipment: 2 wide-mouthed mason jars
Using 2 wide-mouthed mason jars, add 1 tablespoon blueberries to each, followed by 1/4 cup of the batter to each. Top each with 1 tablespoon maple syrup, then another tablespoon blueberries and another 1/4 cup batter. Sprinkle the tops with 1 teaspoon sugar.
Microwave the jars one at a time until the mixture is fluffy and puffed over the edge of the jar, about 2 minutes 40 seconds.