Preheat oven to 375^. Mix Bisquick, 1/4 c. sugar and the butter with fork till crumbly. Reserve 1/4 crumb mixture; press remaining mixture in bottom of ungreased 8 x 8 x 2 inch pan. Bake 10 to 15 minutes, or until light brown. Mix 1/2 c. sugar and remaining ingredients except fruit rollups; pour over baked layer.Completely cover top of yogurt mixture with opened fruit roll-ups, cutting to fit if necessary. Sprinkle with reserved crumb mixture. Return to oven; bake about 20 minutes longer, or until wooden pick in center comes out clean. Cool 15 minutes. Cut into squares.