Old Fashioned Apple Crisp

8 Golden delicious apples, about 4 pounds, peeled, cored, cut into 1/3 inch thick slices
3 tablespoons plus 1 cup of sugar
1 cup of old fashioned oats
1 cup of all purpose flour
2 teaspoons of ground cinnamon
3/4 cup of margarine or unsalted butter
Vanilla Ice cream   

Instructions:

Preheat oven to 350ºF. Butter a 13 x 9 x 2 inch glass baking dish. Combine the apples and 3 tablespoons of sugar in a large bowl, toss to coat. Transfer to prepared baking dish. Combine the oats, flour, cinnamon and remaining 1 cup of sugar in medium bowl. Add the margarine and rub in with fingertips until pea size clumps form. Sprinkle over apples. Bake until the apples are tender, about 1 hour. Serve warm with ice cream. Makes 8 servings