Ingredients

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1/2 cup Butter
1 cup Sugar
2 Eggs
2 cup Flour
2 tsp Baking powder
1/2 tsp Salt
1/2 cup Milk
1 tsp Vanilla
2 cup Blueberries, divided
Sugar mixed with cinnamon, for topping

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Method :

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* Cream together butter and sugar.
* Add eggs, one at a time and mix until blended.
* Sift together the flour, baking powder, and salt.
* Add alternately with milk and vanilla.
* Mash 1/2 cup blueberries; stir into batter.
* Add remaining whole berries.
* Grease muffin tins. Pile batter high.
* Sprinkle with sugar/cinnamon topping.
* Bake at 375 degrees F. for 30 to 35 minutes.