Bisquick Pancakes with Lemon Juice and Blueberries

Bahan-bahan (10 porsi)

• 1 cup pancake & baking mix* (such as Bisquick)
• 2 teaspoons sugar
• 1 teaspoon baking powder
• 1 teaspoon lemon zest
• 3/4 cup milk
• 1 large egg (lightly beaten)
• 1 tablespoon lemon juice (fresh)
• 1/2 cup blueberries (fresh, although I bet frozen would work fine too)
• 2 teaspoons butter (or more)