Preheat oven to 400. To prepare crust, combine sugar, oats, margarine, flour, and 1 teaspoon cinnamon in a mixing bowl until crumbly. Reserve one and half cups.
Press remainder into prepared pan.
To prepare filling, combine remaining cinnamon and strawberry pie filling in a mixing bowl. Spread over baked crust. Sprinkle reserved crumbs over top, pressing in lightly. Bake for 25 minutes, or until lightly browned. Cut into squares and serve.