Upside-Down Caramel Apple Pie
["2 Tbsp. margarine or butter, softened", "1/2 c. pecan halves", "1/2 c. packed brown sugar", "1 pkg. pie crust mix", "2/3 c. granulated sugar", "2 Tbsp. flour", "1/2 tsp. cinnamon", "1/4 tsp. ground nutmeg", "1/4 tsp. salt", "6 c. pared, sliced tart cooking apples (I like Granny Smith)", "margarine or butter"]
["Heat oven to 450\u00b0.", "Line pie plate, 9 x 1 1/4-inch, with a 14-inch circle of foil.", "Spread 2 tablespoons margarine over foil. Press pecan halves, rounded sides down, on foil; sprinkle with brown sugar."]
["margarine", "pecan halves", "brown sugar", "pie crust", "granulated sugar", "flour", "cinnamon", "ground nutmeg", "salt", "pared", "margarine"]