Grandma Barratt's Frozen Strawberry Dessert

In a 9x13 pan combine:
1 cup sifted flour
1/4 cup brown sugar
1/2 cup chopped walnuts
1/2 cup melted butter
Spread evenly in pan and bake for 10 minutes in a preheated 350 degree oven. Let cool completely, remove 1/3 of the mixture, then press remaining mixture into bottom of the pan.

Combine (use a mixer or hand mixer):
2 egg whites
1 cup sugar
1 lb frozen strawberries, thawed with juices
2 T lemon juice
Beat at high speed until stiff peaks are formed- it will take 5 or 6 minutes.

In a separate bowl, mix 1 cup whipping cream until fluffy, then fold into strawberry mixture. Spread over crust, then sprinkle with reserved crust mixture. Cover and freeze several hours or overnight.