Blackberry and Raspberry Crisp

Ingredients

• 24 oz fresh or frozen blackberries
• 24 oz fresh or frozen raspberries
• 1 1/4 cups sweet rice flour
• 1 1/4 cups brown sugar
• 1 1/4 cups margarine, divided use
• 2 Tbsp margarine
• 1 1/2 tsp cinnamon
• 1 tsp salt