2 c. Bisquick
1/4 c. sugar
2 tbsp. butter, softened
2 egg whites
3/4 c. nonfat fruit flavored yogurt
1 tsp. vanilla

STREUSEL FOR TOP:

1/4 c. Bisquick
1/4 c. sugar
2 tbsp. firm butter

Mix streusel to make crumbs; set aside.

Heat oven to 375 degrees. Grease square pan, 8"x8"x2". Mix all ingredients except streusel. Spread in pan, sprinkle with streusel. Bake 30 to 35 minutes or until wooden pick inserted in center comes out clean. Cool 10 minutes, then cut in squares.