Preheat oven to 350°F (175°C). Butter an 8 x 8-inch baking dish; set aside.
Prepare Topping:
Whisk together flour, brown sugar, cinnamon, ginger, and salt in a medium bowl.
Stir melted butter into flour mixture, pressing until it clumps together. Set aside for 10 minutes.
Prepare Peaches:
Combine peaches, sugar, lemon juice, cornstarch, cinnamon, ginger, and salt in a large bowl. Mix well.
Assemble + Bake Crumble:
Transfer peach mixture to prepared baking dish, spreading in an even layer. Scrape any juices / sugar that remain in bowl into baking dish.
Using hands, crumble topping mixture over peaches.
Bake until topping is browned and peaches are bubbling, about 45 to 50 minutes.
Let cool at least 30 minutes before serving plain or topped with ice cream. Enjoy!
Notes
Peaches tend to bruise easily. Because of this, I recommend buying an extra peach or two. That way, if you have cut away some of the fruit, you won't run short.I used light brown sugar. Dark brown sugar would also work though.For a vegan / dairy free crumble, use plant based butter.If you'd prefer to make this dessert with an oat-based topping, feel free to substitute my Oat Crumble Topping. It's delicious either way!Make sure to read the info before this recipe card for helpful tips, variations, related recipes, and more!