Crust:

1 stick butter
1/4 c. brown sugar
1 c. pecans, chopped
1 c. all-purpose flour

Mix all ingredients and bake crust at 350°F until brown, about 20 minutes. Let cool and crumble into 9 inch x 13 inch dish. Save some to sprinkle on top.

Filling:

4 c. blueberries
1/3 c. all-purpose flour
1 1/4 c. sugar

Mix all ingredients, and cook until thickened. Spread on top of crumb layer.

Topping:

8 oz. cream cheese
1 c. powdered sugar
2 envelopes Dream Whip, whipped (may use Cool Whip)

Mix cream cheese and sugar thoroughly. Whip 2 envelopes of Dream Whip according to package directions. Add Dream whip to cream cheese and sugar mixture. Spread on filling; sprinkle remaining crust crumbs on top. Refrigerate.