Lemon Upside Down Pie

Directions

1. 1
   Heat broiler.
2. 2
   Combine flour and 1/3 cup sugar in bowl; cut in 1/4 cup butter until mixture resembles coarse crumbs.
3. 3
   Place into ungreased 15x10x1-inch baking pan.
4. 4
   Broil 3 to 4 inches from heat, watching closely and stirring every minute, 3-4 minutes or until golden brown and crunchy.
5. 5
   Cool completely.
6. 6
   Set aside.
7. 7
   Heat oven to 275F.
8. 8
   Generously spray 9-inch pie pan with no-stick cooking spray; set aside.
9. 9
   Beat egg whites, vanilla and cream of tartar in bowl at low speed until foamy.
10. 10
    Add 3/4 cup sugar gradually, beating at high speed until stiff peaks form and mixture is glossy.
11. 11
    Spoon into prepared pan; spread meringue over bottom and up sides.
12. 12
    Bake 1 hour without opening oven door.
13. 13
    Turn off oven; let meringue shell stand in oven 1 additional hour.
14. 14
    Remove from oven; cool to room temperature.
15. 15
    Combine water, 1 cup sugar and cornstarch in 2-quart saucepan.
16. 16
    Cook over medium heat, stirring constantly, 5-7 minutes or until mixture comes to a boil.
17. 17
    Continue cooking 1 minute.
18. 18
    Gradually stir 1/2 cup sugar mixture into beaten egg yolks with whisk.
19. 19
    Gradually stir egg mixture into remaining hot mixture.
20. 20
    Continue cooking stirring constantly, 2-3 minutes or until mixture thickens.
21. 21
    Remove from heat.
22. 22
    Stir in lemonade concentrate, 1 tablespoon butter and salt.
23. 23
    Cover; refrigerate 1 hour.
24. 24
    Stir sour cream into cooled filling mixture.
25. 25
    Spoon cooled filling mixture into meringue shell; sprinkle with topping.
26. 26
    Cover; refrigerate until serving time.