Raspberry Crisp - cooking recipe

Ingredients

4 c. fresh raspberries, divided
3/4 c. sugar
2 Tbsp. cornstarch
1 3/4 c. quick-cooking oats
1 c. flour
1 c. packed brown sugar
1/2 tsp. baking soda
1/2 c. margarine

Preparation

Crush 1 cup raspberries; add enough water to measure 1 cup.