Frozen Strawberry Squares

Step 1
Preheat oven to 350 degrees F (180 degrees C).

Step 2
Combine flour, brown sugar, chopped walnuts, and melted butter and mix well. Spread evenly in a shallow baking pan.

Step 3
Bake for 20 minutes, stirring occasionally. Remove from oven; when cool enough to handle, sprinkle 2/3 of the crumb mixture into a 13×9-inch baking dish.

Step 4
Mix sliced strawberries with sugar; set aside.

Step 5
Combine egg whites and lemon juice in a large bowl. With electric mixer, beat until stiff (pasteurized whites take longer to beat than fresh egg whites, so be patient). Mix in sugared strawberries.

Step 6
Fold in whipped cream. Spoon fruit and cream mixture over crumb crust. Sprinkle remaining crumbs on top.

Step 7
Freeze 6 hours or overnight. Cut into squares and garnish with whole strawberries, if desired.