AP Flour - 2 1/2 cups, plus 1 tbsp. for dusting the Blueberries Baking powder - 1 tbs. Baking Soda - 1/2 tsp Salt - 1/2 tsp Butter -1 stick, melted Sugar - 1 cup Egg - 2 Sour Cream - 1 1/2 cup Milk - 2 tbsp. Vanilla extract - 1 tsp Lemon zest - 1 tsp Blueberries - 1 1/2 cup Preheat oven to 400°F with a rack in the lower middle. Using a standard 12-well Muffin pan, place a Muffin liner in each well, or if you don't have Muffin liners, grease the inside of the Muffin pan wells
