Fresh Berry Dessert Bites

2/3 cup sugar

1/2 teaspoon grated lemon peel

1/4 teaspoon salt

1 cup butter or margarine, cut into tablespoon-size pieces

1 package (8 oz) cream cheese, softened

2 tablespoons packed brown sugar

1 container (6 oz) Yoplait® Original 99% Fat Free lemon burst yogurt

1 teaspoon grated lemon peel

40 fresh raspberries (about 6 1/2 oz)

40 fresh blackberries (8 oz)

40 fresh blueberries (about 3 oz)