Ingredients:
- 6 cups (900g) fresh peaches, peeled and sliced
- 1/2 cup (100g) granulated sugar
- 2 tbsp (16g) cornstarch
- 1 tsp (2g) ground cinnamon
- 1 tbsp (15ml) lemon juice
- 1/4 tsp (1.5g) salt
- 1 cup (90g) old-fashioned rolled oats
- 1 cup (125g) all-purpose flour
- 1 cup (200g) packed light brown sugar
- 1/2 tsp (2g) baking powder
- 1/2 tsp (3g) salt
- 1/2 cup (113g) unsalted butter, cold and cubed
Instructions:
- In a 9x9 inch baking dish or saucepan, toss the sliced peaches with granulated sugar, cornstarch, cinnamon, lemon juice, and salt.
- Let the peach mixture sit for 10 minutes to allow the fruit to release its juices and the cornstarch to dissolve.
- In a large bowl, whisk together the rolled oats, flour, brown sugar, baking powder, and salt.
- Add the cold, cubed butter to the dry ingredients. Use a pastry cutter or forks to work the butter in until the mixture looks like coarse wet sand with some pea-sized lumps remaining.
- Spread the oatmeal topping evenly over the peaches without pressing down firmly.
- Bake in a preheated oven at 375°F (190°C) for 40–45 minutes until the fruit juices are bubbling and the topping is deep golden-brown.