1/2 c. butter
1/4 c. brown sugar
1 c. flour
1/2 c. chopped nuts
2 egg whites
2/3 c. sugar
1 tbsp. lemon juice
16 oz. fresh or frozen (thaw first) strawberries
1/2 c. Cool Whip

Melt butter, stir in brown sugar, flour and nuts (reserve 1/3). Spread on greased 9 x 13 inch pan. Bake at 350 degrees for 20 minutes.

In large mixing bowl, beat egg whites until stiff, slowly add sugar and lemon juice. Beat 10 to 15 minutes on high speed. Continue beating while adding strawberries. Swirl mixture in prepared crust and top with reserved crumb mixture. Freeze until just before serving.