Crust:

1 3/4 c. flour
1 tsp. baking powder
2 tbsp. sugar
1/2 plus 1/8 c. butter

Filling:

3-4 cups rhubarb, cut up
4 egg yolks, beaten
1 1/2 cups sugar
5 tbsp. flour
1/2 c. nuts

Topping:

4 egg whites
3/4 c. sugar
1/4 tsp. cream of tartar

Mix all crust ingredients together and press into 9x13 pan. Combine filling ingredients and mix, put on top of the crust.

Bake at 375°F for 35-40 minutes or until filling is set. Beat egg whites and cream of tartar until foamy. Continue whipping while slowly adding sugar. Beat until stiff peaks form, spread over filling making sure to seal edges. Brown at 400°F for 8-10 minutes.