Ingredients:

  • 6 cups (900g) mixed fresh berries (strawberries, blueberries, raspberries, blackberries)
  • 1/2 cup (100g) granulated sugar
  • 1 tbsp (15g) cornstarch
  • 1 tbsp (15ml) fresh lemon juice
  • 1 tsp (2g) ground cinnamon
  • 1 cup (100g) old-fashioned rolled oats
  • 1 cup (125g) all-purpose flour
  • 1/2 cup (100g) packed light brown sugar
  • 1/2 cup (113g) cold unsalted butter, cubed
  • 1/4 tsp (1.5g) salt

Instructions:

  1. Preheat your oven to 375°F (190°C). Note: Make sure the rack is in the center for even heat.
  2. In a 9x9 inch baking dish, toss the mixed berries with granulated sugar, cornstarch, lemon juice, and cinnamon.
  3. Stir the berries until they are coated in a glossy sheen.
  4. In a separate mixing bowl, combine the rolled oats, all purpose flour, brown sugar, and salt.
  5. Add the cold cubed butter to the dry mixture.
  6. Use a fork or pastry cutter to work the butter in until it resembles coarse wet sand with pea sized lumps.
  7. Sprinkle the crumble topping evenly over the berry mixture.
  8. Bake for 30–35 minutes until the fruit juices are bubbling vigorously around the edges and the topping is deep golden brown.