Lemon Squares

Yield:	18 Servings
Categories:	Cakes, Low-Fat, Desserts

		Nonstick Cooking Spray
1	c	All-Purpose Flour, Plus
2	tb	All-Purpose Flour, Divided
1/2	ts	Baking Powder, Divided
1/4	ts	Baking Soda
1/4	ts	Salt
1 1/4	c	Sugar, Divided
2	ts	Lowfat Margarine, *Note
2	ts	Canola Oil, **Note
1/2	c	Egg Beaters? 99% Egg Substitute, Plus
2	ts	Egg Beaters? 99% Egg Substitute, ***Note, Divided
1	tb	Grated Lemon Rind, Divided
1/4	c	Fresh Lemon Juice
1	lg	Egg
		Confectioner's Sugar, For Dusting