1 c. flour
1/2 c. butter, melted
1/4 c. brown sugar
1/2 c. chopped nuts

FILLING:

2 egg whites
2/3 c. white sugar
10 oz. frozen strawberries, slightly thawed
1 (9 oz.) container Cool Whip

Mix crust ingredients. Sprinkle in 9 x 13 inch pan. Bake at 350 degrees for 15 minutes. Take out 1/4 cup crumbs. Pat remaining crumbs down in pan and cool. Beat egg whites and sugar until thick. Fold in Cool Whip and strawberries. Pour over crumbs and top with remaining crumbs. Freeze.