Serves: 6–8 Filling 4 cups frozen blackberries (do not thaw) 2 cups blueberries (fresh or frozen) ½ cup granulated sugar (adjust to taste) 2 tbsp cornstarch 1 tbsp lemon juice 1 tsp vanilla extract ½ tsp ground cinnamon Pinch of salt Crisp Topping 1 cup old-fashioned rolled oats ¾ cup all-purpose flour ¾ cup packed brown sugar ½ tsp cinnamon ¼ tsp salt ½ cup (1 stick) cold unsalted butter, cut into small cubes Directions Preheat oven to 375°F (190°C). Lightly grease an 8x8-in
