Emma’s Blueberry Coffee Cake

Difficulty: easy Prep Time: Fifteen Minutes Total Time: More than 1 hour
1/2 cup butter or margarine
1 1/2 cups sugar
2 eggs
1 cup sour cream
1 tsp. vanilla
2 cups all-purpose flour
1 tsp. baking soda
2 cups blueberries

Topping:
1/2 cup brown sugar
1 tbsp flour
1 tsp cinnamon
1 tbsp butter or margarine

Cream butter and sugar. Beat in eggs one at a time. Stir in sour cream and vanilla. Stir in flour and baking soda. Fold in blueberries.
Turn into greased 9 x 13 in. pan. Mix topping ingredients until crumbly. Sprinkle over batter. Bake in preheated 350° oven for 50 min.