
Juicy baked peaches bubble under a buttery cinnamon-oat topping in this easy homemade peach crisp, the perfect end of summer dessert ready in under an hour.

There is something almost magical about the smell of peaches bubbling away in the oven under a blanket of buttery, cinnamon-spiced oats. This peach crisp with oats captures everything wonderful about late summer in one humble baking dish. It is rustic, it is fast, and it turns even slightly underripe peaches into something spectacular. If you have ever wondered how to make peach crisp that tastes like it came from a farmstand bakery, this is the recipe to bookmark.
Unlike a peach cobbler with its biscuit topping, or a pie that demands a perfect crust, this easy homemade peach crisp asks very little of you. No rolling pins, no chilling dough, no fuss. Just slice, toss, crumble, and bake.
Before we get cooking, the right tools and ingredients make a real difference here. A sharp paring knife makes peeling and slicing those juicy peaches so much easier, and a sturdy ceramic baking dish helps the topping brown evenly instead of burning at the edges. These are the products that genuinely help this recipe shine:
The peaches are the star here, so it pays to choose well. Look for peaches that are:
Freestone peaches, the kind where the pit pulls away cleanly, are easiest to work with. If your peaches are a touch underripe, do not worry. The sugar and baking time will coax out plenty of natural sweetness.
Chef's Tip: No need to peel your peaches if you do not want to. The skins soften beautifully during baking and add a lovely bit of color and texture to the finished crisp.
What separates a great crisp from a merely good one is the topping. This peach crisp recipe with oatmeal cookie topping vibes relies on a few key things: cold butter, a generous hand with the cinnamon, and not overmixing.
When you work the cold butter into the oats, flour, and brown sugar, you want it to stay clumpy rather than turning into a smooth paste. Those uneven, pea-sized clumps are what bake up into craggy, golden, almost cookie-like crumbles on top of the soft fruit underneath. It is the textural contrast, crisp on top and tender below, that makes this dessert so satisfying.
A spoonful of cornstarch in the peach filling is the other quiet hero of this recipe. It thickens the natural juices just enough so you get a glossy, spoonable filling instead of a watery puddle.
Chef's Tip: Resist the urge to skip the resting time after baking. Those first ten minutes out of the oven let the bubbling juices settle into a thick, syrupy sauce instead of running everywhere when you serve it.
Ready to make it? This recipe comes together in two simple parts: a quick peach filling and an even quicker oat topping. Here is the full step-by-step recipe:

Juicy baked peaches bubble under a buttery cinnamon-oat topping in this easy homemade peach crisp, the perfect end of summer dessert ready in under an hour.
Preheat the oven to 375 degrees F (190 degrees C) and lightly butter a 9-inch baking dish.
In a large bowl, toss the sliced peaches with granulated sugar, lemon juice, cornstarch, and half the cinnamon until evenly coated.
Pour the peach mixture into the prepared baking dish, spreading it into an even layer.
In a separate bowl, combine the oats, flour, brown sugar, remaining cinnamon, and salt.
Add the cold cubed butter and use your fingers or a pastry cutter to work it into the dry mixture until it forms coarse, clumpy crumbs.
Sprinkle the oat topping evenly over the peaches, covering the fruit completely.
Bake for 35 to 40 minutes, until the topping is golden brown and the peach filling is bubbling at the edges.
Let the crisp rest for 10 to 15 minutes before serving so the juices can set slightly.
Serve warm, with a scoop of vanilla ice cream if desired.
This crisp is endlessly versatile, which is part of why it remains one of the most popular end of summer dessert ideas year after year. A few favorite ways to serve and customize it:
If your peaches are especially juicy, you can add an extra teaspoon of cornstarch to the filling to keep things from getting too saucy.
Peach crisp is one of those rare desserts that tastes nearly as good the next day. Once it has cooled to room temperature, cover the baking dish tightly with plastic wrap or transfer leftovers to an airtight container. It will keep well in the refrigerator for several days, and you can freeze it for longer storage.
When you are ready to enjoy it again, a quick stint in a warm oven will revive that crisp, golden topping far better than a microwave ever could, though the microwave works fine in a pinch if you are short on time.
However you serve it, this peach crisp with oats is proof that the simplest desserts are often the most memorable. Sweet, warm, and a little bit messy in the best possible way, it is a dish worth making again and again while peach season lasts.