Ingredients
Method
- Preheat oven to 350°F (175°C). Grease a 9x13-inch baking dish or line with parchment paper.
- In a large bowl, sift together the flour, baking powder, and salt. Set aside.
- In another bowl, cream the butter, granulated sugar, and brown sugar until light and fluffy.
- Beat in the eggs one at a time, then stir in the vanilla extract.
- Add the dry ingredients to the butter mixture in three additions, alternating with the milk or buttermilk. Start and end with dry ingredients. Mix until just combined.
- Toss the peaches and raspberries with lemon juice and 1 tablespoon sugar. Gently fold into the batter with a spatula.
- Pour the batter into the prepared baking dish and smooth the top.
- For the topping, mix oats, brown sugar, butter, and cinnamon with your fingers until crumbly. Sprinkle evenly over the batter.
- Bake for 45–55 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs.
- Let cool for 15–20 minutes before serving. Enjoy warm with ice cream or whipped cream.
Notes
Use buttermilk for a tangy, moist texture. Don’t overmix the topping—crumbs are ideal. Cover with foil if browning too fast. Try substituting peaches with plums or apricots, or swap raspberries for blackberries.