1 c. sm. curd cottage cheese
8 oz. cream cheese
1/4 c. butter
2 lg. eggs
3/4 c. sugar
3 tbsp. cornstarch
2 tsp. grated lime or lemon peel
2 tbsp. lime or lemon juice
1 c. sour cream

Grease spring-form pan. Dust with graham cracker crumbs. In processor, blend ingredients in order listed. Bake at 325 degrees for 1 hour. Turn oven off and let stand 1 hour in hot oven. Cover top with graham cracker crumbs before serving.