To prepare a uncle's favorite blueberry muffins breakfasts recipe, first you'll need to gather your ingredients. You will need: 1 cup blueberries, 2 tablespoons sugar, 1 tablespoon vanilla, and 1 teaspoon cinnamon. Preheat the oven to 325 degrees F. Line muffin tins with paper liners. Fill muffin cups 2/3 full with muffin batter. Bake for 18 to 20 minutes. Remove from oven and allow to cool.