Blueberry Crumb Muffins

Who doesn't love blueberry muffins?  These muffins were so great! I adapted them from Baking a Moment.


Muffins:
2 cups flour
1 tbsp baking powder
1/2 tsp salt
1/4 cup unsalted butter (melted)
1 cup granulated sugar
1/2 cup milk
1/2 cup plain greek yogurt
1/2 cup sour cream
1 large egg
1 tsp vanilla extract
1 1/2 cups blueberries

Crumb Topping:

3 tbsp unsalted butter (melted)

3/4 cups flour 

1/4 cup sugar

1/4 tsp salt

Heat oven to 425. In a mixing bowl combine the flour, baking powder and salt. In a separate bowl combine the greek yogurt, sour cream, sugar, egg and vanilla extract.  Stir into the flour mixture then add the milk. Carefully fold in the blueberries to the batter then fill muffin liners 3/4 of the way full.  In a small bowl make the crumb topping by combining the melted unsalted butter, flour, sugar and salt.  Top the muffins evenly.  Bake for 5 minutes then turn the heat down to 350 and bake for 15 more minutes or until the muffins are baked through.  Remove and cool for 5 minutes before removing from muffin tin.