Blackberry Crunch - cooking recipe

Ingredients

3 to 6 c. blackberries
1 tsp. lemon juice
1/4 c. water
1/2 tsp. lemon flavoring
1/2 tsp. cinnamon
2 c. sugar
2 tsp. cornstarch
1 box yellow cake mix
1/2 c. margarine

Preparation

Combine berries, juice, water, flavoring, sugar and cinnamon. Bring to boil.
Add cornstarch.
Simmer 5 minutes.
Pour into greased 9 x 13-inch pan, pour dry mix out of box.
Spread evenly. Place sliced margarine over cake mix.
Bake at 350\u00b0 for 30 to 45 minutes.