Preheat oven to 350°F (180°C). To make topping, mix flour, oats, 1/2 cup (125 mL) sugar, almonds and cinnamon in a medium bowl. Add margarine and blend with fingertips until mixture resembles coarse bread crumbs. Combine fruit in a 9 x 9-in. (1.5 L) baking dish. Add 3 tbsp (45 mL) of sugar and mix to combine. Scatter topping over fruit and bake until light brown and bubbling, about 45 min. Serve with frozen yogourt, if desired.