In food processor, pulse 2 c flour, oatmeal, and 1/4 c sugar. Add cold butter spread and 1 t vanilla and pulse until mixture looks like granola, then pulse into a dough.
Press mixture into a greased 9 x 13 pan and bake 12 minutes.
Toss together apples, 1/4 c sugar, 1 t vanilla, cinnamon, and nutmeg. Spread over cooled crust and bake about 40 minutes more.