Blueberry Muffins

Ingredients
1/2 cup butter
1 1/4 cup sugar
1/2 tsp salt
2 eggs
3 T sugar
2 T lemon zest
1 t vanilla
1 3/4 cups flour
2 tsp baking powder
1/2 cup plain yogurt

1/4 cup floue
1 pint blueberries

Streusel Topping
3 T flour
3 T brown sugar
1/2 tsp cinnamon
2 T butter

Directions
Heat oven to 375, and prep 12 muffin tins.

Mix all ingredients (excluding blueberries and 1/4 cup flour) until smooth. Crush 1/4 cup of blueberries and mix in. Mix remaining blueberries and the 1/4 cup flour together and fold into batter.

Scoop batter into muffin tins and top with streusel mix prior to baking.

Bake for 30 minutes.