Heat oven to 400 degrees. Prepare 1 package of wild blueberry muffin mix as directed except add 2 tablespoons sugar when adding dry mix and pour batter into greased square pan, 8 x 8 x 2 inches. Bake 20 to 22 minutes. Serve warm with hot Lemon Sauce. (6 servings).

Do ahead note: Coffee cake may be prepared day before serving. Cool and cover with foil. Just before serving, heat cake (with foil cover) in 350 degree oven for 15 minutes.

LEMON SAUCE:

1/3 c. sugar
1 tbsp. cornstarch
1 tsp. grated lemon peel
1 c. water
3 tbsp. butter
3 tbsp. lemon juice

Mix the sugar, cornstarch and lemon peel. Stir in water. Cook, stirring constantly, until mixture thickens and boils. Boil and stir 1 minute. Remove from heat; stir in butter and lemon juice.