Juicy Peach Crumble with Crunchy Oat Topping

Peach Crumble Recipe Ingredients

There are two short ingredient lists: one for the fruit filling and one for the oat crumble topping.

Peach Filling Ingredients

• Fresh peaches: sliced (peel if you prefer a smoother filling).
• Granulated sugar
• Cornstarch: this is essential — it thickens the fruit juices into a glossy sauce so the topping doesn’t become soggy.
• Lemon juice: to brighten the fruit flavor.
• Vanilla extract
• Salt

Oat Crumb Topping Ingredients

• All-purpose flour
• Old-fashioned rolled oats: use old-fashioned, not quick or instant, so the oats stay chewy and textured.
• Brown sugar: adds warm caramel notes that pair beautifully with peaches.
• Ground cinnamon
• Kosher salt
• Unsalted butter: worked in until the mixture forms damp, pea-sized clumps.

Full ingredient amounts and the printable recipe are included further down in the recipe card.

Variations and Substitutions

This crumble adapts well to swaps and additions.

• Blueberry-peach crumble: stir in a cup of fresh or frozen blueberries.
• Canned peaches: drain them well and reduce the added sugar slightly.
• Frozen peaches: use frozen fruit straight from the freezer and add about 10 minutes to the baking time.
• Gluten-free: substitute a 1:1 gluten-free flour blend and certified gluten-free oats.
• Nutty topping: fold 1/2 cup chopped pecans or sliced almonds into the crumble for extra crunch.
• Other fruit: pears or mixed stone fruit make excellent alternatives.

Tools You’ll Need

Nothing specialized — that’s part of why this is so easy to make.

• 2-quart baking dish: an 8×8 square or a 9-inch round works well.
• Large bowl: for tossing the peaches with sugar and cornstarch.
• Medium bowl: for mixing the crumble topping.
• Paring knife: for slicing the fruit.
• Aluminum foil: to tent the crumble partway through baking if the top browns too quickly.

How to Make This Peach Crumble: An Easy Guide

The process is simple: toss the fruit, make the topping, assemble, and bake. Total time is roughly one hour.

Toss the Peaches

Preheat the oven to 375°F (190°C) and lightly butter a 2-quart baking dish. Slice the peaches into a large bowl, then add sugar, cornstarch, lemon juice, vanilla, and a pinch of salt. Toss until every slice is lightly coated and no dry cornstarch remains.

Make the Oat Crumb Topping

In a medium bowl, whisk together the flour, oats, brown sugar, cinnamon, and salt. Work the cubed butter into the dry ingredients with your fingers until the mixture forms damp, pea-sized clumps. The mixture should be evenly moistened with no dry flour.

Assemble and Bake Until Golden

Spread the peach mixture in the prepared dish, then scatter the topping evenly over the fruit, breaking apart any large clumps. Bake for 40 to 45 minutes, until the filling bubbles at the edges and the topping is deep golden brown. If the topping is browning too quickly, loosely tent the dish with foil after about 25 minutes. Let the crumble rest for 10 minutes before serving so the filling sets.

5 Common Mistakes to Avoid

Avoid these common errors to get the best texture and flavor from your peach crumble:

1. Skipping the cornstarch: without it the filling stays runny and the topping becomes soggy.
2. Using underripe fruit: firm, underripe peaches remain bland and chewy after baking.
3. Overworking the topping: keep the clumps pea-sized; don’t press everything into a dough.
4. Pulling it out too early: bake until the filling bubbles at the edges, not just until the top is golden.
5. Serving immediately: let it rest 10 minutes so the cornstarch sets and the filling thickens.

Make Ahead and Storage

This crumble stores well and the topping crisps up again when reheated.

Storing Leftovers

• Room temperature: cover loosely for up to 1 day.
• Refrigerator: cover and refrigerate for up to 4 days.
• Keep it loose: avoid airtight seals that trap steam and soften the topping.

Freezing

• Baked: cool completely, wrap well, and freeze up to 3 months.
• Unbaked: assemble in the baking dish, wrap, and freeze; bake from frozen.
• From frozen: add 15–20 minutes to the baking time when cooking from frozen.

Reheating Leftovers

• Oven: 350°F (175°C) for about 15 minutes restores a crisp topping.
• Microwave: 30 seconds for a single portion, though the topping will soften.
• Cold: it’s also delicious chilled with yogurt.

What to Serve with Peach Crumble

• Vanilla ice cream: the classic pairing — the cold cream melts into the warm fruit.
• Cold heavy cream: poured over the top without whipping for a rich finish.
• Greek yogurt: adds tang and turns leftovers into a breakfast-friendly dish.
• Peach ice cream or other fruit desserts: pair with similar fruit dishes for a summer spread.

Tips for the Best Peach Crumble

• Choose ripe but firm peaches: fruit that gives slightly at the seam holds its shape; if peaches are very juicy, add an extra tablespoon of cornstarch.
• Leave the skins on: they soften during baking and add color and flavor; peel only if you prefer a smoother texture.
• Use old-fashioned oats: quick oats can become pasty instead of chewy.
• Tent with foil, don’t seal: loose foil slows browning without steaming the topping.
• Let it rest: cornstarch thickens as it cools, so wait at least 10 minutes before serving.