Blueberry Doughnut Muffins - cooking recipe

Ingredients

2 1/4 cups flour
1 tablespoon baking powder
1 teaspoon baking soda
1 pinch salt
1/4 teaspoon nutmeg
4 tablespoons brown sugar
1 cup sour cream
1 egg
1/4 cup melted butter
1 teaspoon vanilla
1/2 cup frozen blueberries
Topping
1 cup white sugar
1/2 tablespoon cinnamon (full)
1/2 - 1 cup melted butter

Preparation

Preheat oven to 400\u00b0F and grease 24 mini muffin tins (this recipe works the best with mini muffins, but use large if you prefer, you will have adjust your cooking time accordingly).
Combine dry ingredients.
Combine wet ingredients in a separate bowl and stir with a whisk, and then stir blueberries into this.
Add wet ingredients to dry and blend but do not over mix.
Spoon muffins into tins, filling almost to top to make a nice crown.
Bake for about 12-15 minutes.
Let cool in tins for 2 minutes, and then remove and place on rack to cool an additional 5 minutes.
Stir sugar and cinnamon together.
Dip muffins all the way in butter and then roll in sugar mixture. Serve at once.