If you dream of that perfect marriage between sweet summer fruit and cozy, cinnamon-kissed oats, these Peach Cinnamon Oatmeal Crumb Bars are about to claim a starring role in your dessert lineup. Imagine luscious, syrupy peaches tucked into a buttery, golden oat crust, all crowned with a crumbly topping that practically begs for a scoop of ice cream. These bars are everything you want in a homemade treat—comforting, bursting with flavor, and simple enough for a casual afternoon baking session. Whether you’re packing a picnic, sharing with friends, or just treating yourself, these bars bring sunny, homemade goodness to every bite.

Peach Cinnamon Oatmeal Crumb Bars Recipe - Recipe Image

Ingredients You’ll Need

You’ll be amazed at how just a handful of pantry staples and a few fresh peaches transform into irresistible bars. Every ingredient has a key role, whether it’s adding warmth, sweetness, or that signature crumbly texture you can’t resist.

Rolled oats: Give the bars their signature chewy and hearty texture—don’t skip these for the ultimate crumb.
All-purpose flour: Helps bind the crust and topping together, giving structure to every bite.
Packed brown sugar: Adds a caramel-like sweetness and depth of flavor, plus extra moisture for a tender crumb.
Ground cinnamon: Infuses the crumb with cozy, aromatic spice that pairs perfectly with juicy peaches.
Unsalted butter, melted: Brings richness and helps everything meld into that perfect streusel.
Pinch of salt: Enhances all the flavors and balances out the sweetness.
Fresh peaches, sliced: The star of the show! Use ripe, juicy peaches for the very best results.
Granulated sugar: Sweetens the peach filling and helps it turn blissfully syrupy and jam-like.
Cornstarch: Thickens the peach layer so the bars slice neatly without becoming soggy.
Lemon juice: Brightens up the peaches and brings a welcome pop of tartness.
Ground cinnamon (for filling): Echoes the warmth in the crust and ties all the flavors together.

How to Make Peach Cinnamon Oatmeal Crumb Bars

Step 1: Prep Your Pan

Begin by preheating your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving a little overhang on the sides so you can lift the bars out easily later. Give the paper a quick light greasing—this little step ensures your Peach Cinnamon Oatmeal Crumb Bars come out picture-perfect, with no messy sticking.

Step 2: Make the Oat Crumb Mixture

In a large bowl, stir together the rolled oats, all-purpose flour, packed brown sugar, and ground cinnamon. Pour in the melted butter and add a pinch of salt, then mix until the ingredients come together and form a crumbly, slightly damp mixture. This blend will serve double duty as both the sturdy base and the irresistibly crumbly topping for your bars.

Step 3: Form the Crust

Take about two-thirds of your oat crumb mixture and press it firmly and evenly into the bottom of your prepared pan. Use your hands or the flat bottom of a measuring cup for an even, compact crust—this will hold up under all that juicy peach filling!

Step 4: Prepare the Peach Filling

In a separate bowl, toss together the sliced peaches, granulated sugar, cornstarch, lemon juice, and a touch of cinnamon. The sugar draws out the peaches’ juices while the cornstarch thickens everything into a dreamy, jammy layer as the bars bake. Spread this sweet, fragrant peach mixture evenly over the pressed oat crust.

Step 5: Add the Crumb Topping

Sprinkle the remaining crumb mixture evenly over the peach filling—you want to cover most of the fruit, but let a little peek through the oat topping to give everyone that mouthwatering preview of what’s inside. Gently press the topping down just a bit to help it adhere while baking.

Step 6: Bake to Golden Perfection

Slide the pan into your preheated oven and bake for 35 to 40 minutes. You’re looking for edges that bubble with syrupy peach goodness and a crumb topping that’s golden brown and utterly inviting. The aroma in your kitchen will be absolutely irresistible!

Step 7: Cool and Slice

When baking time is up, let the bars cool completely in the pan. This helps everything set, making it much easier to slice neat, defined squares. Use the parchment paper sling to lift the bars out, then cut into squares and prepare for lots of smiles!

How to Serve Peach Cinnamon Oatmeal Crumb Bars

Garnishes

Dress up your Peach Cinnamon Oatmeal Crumb Bars with a light dusting of powdered sugar, a drizzle of honey, or even a few slivered almonds for a pretty touch and a bit of extra crunch. For those feeling a little indulgent, a small scoop of vanilla ice cream or a dollop of whipped cream adds sheer dessert bliss.

Side Dishes

These bars are wonderful with a hot cup of tea or coffee, the bitterness balancing the bars’ natural sweetness. For breakfast or brunch, serve alongside creamy Greek yogurt and a bowl of fresh berries for a beautiful, satisfying spread.

Creative Ways to Present

Bring out your inner host and slice the bars into small rectangles for a tea party tray, or cut them into bite-sized pieces and serve in mini cupcake liners for an easy picnic treat. You can even layer bar pieces in parfait cups with extra peaches and yogurt for a fun, summery take on a breakfast trifle.

Make Ahead and Storage

Storing Leftovers

Once completely cooled, leftover bars can be stored in an airtight container at room temperature for up to two days. For longer freshness, keep them in the fridge; they’ll stay moist and delicious for up to five days. The crumb topping might soften a bit, but the flavor only gets better!

Freezing

Peach Cinnamon Oatmeal Crumb Bars freeze beautifully! Place slices between layers of parchment paper in an airtight container, and they’ll keep in the freezer for up to three months. Thaw at room temperature or overnight in the fridge for a taste of summer any time.

Reheating

Want to recreate that fresh-from-the-oven magic? Just pop your bars into a preheated 300°F oven for 8 to 10 minutes, or microwave individual portions for about 15 seconds. This revives the crumb topping and brings back that cozy warmth.

FAQs

Can I use canned or frozen peaches instead of fresh?

Absolutely! While fresh peaches bring incredible flavor and texture, canned (drained well) or frozen (thawed and patted dry) peaches work great when fresh are out of season. You might want to reduce the sugar slightly if your peaches are already sweetened.

Can I make these bars gluten-free?

Yes—just substitute your favorite gluten-free all-purpose flour blend for the regular flour, and make sure your oats are certified gluten-free. The bars will keep their delicious crumbly texture.

Can I double the recipe?

Go for it! Scale everything up and bake the bars in a 9×13-inch pan. Keep an eye on them; you may need to extend the baking time by a few minutes to ensure the center bakes through.

What’s the best way to cut neat bars?

Allow the bars to cool completely before slicing, and use a sharp knife for clean edges. For extra precision, wipe the knife between cuts. If you’re feeling fancy, chilling the bars slightly makes them even easier to slice!

Are Peach Cinnamon Oatmeal Crumb Bars good for breakfast?

Absolutely—they make a delightfully rustic breakfast treat, especially served with yogurt and a little handful of fresh fruit. The wholesome oats and juicy peaches make them feel right at home on any breakfast table.

Final Thoughts

If you’re ready for a delicious taste of summer wrapped in a cozy, cinnamon-spiced crumb, these Peach Cinnamon Oatmeal Crumb Bars are calling your name. They’re easy, irresistible, and absolutely worth sharing with friends and family—or just keeping all to yourself. Happy baking!

Peach Cinnamon Oatmeal Crumb Bars Recipe

★★★★★

4.7 from 7 reviews

Author: Olivia
Total Time: 50-55 minutes
Yield: 12 bars 1x
Diet: Vegetarian

Print Recipe

Description

These Peach Cinnamon Oatmeal Crumb Bars are a delightful treat that combines the sweetness of fresh peaches with a buttery oatmeal crumb crust and topping, spiced with cinnamon for a comforting flavor profile.

Instructions

Preheat Oven: Preheat the oven to 350°F (175°C) and prepare an 8×8-inch square baking pan by lining it with parchment paper and greasing lightly.
Mix Oatmeal Crumb: In a large bowl, combine rolled oats, flour, brown sugar, cinnamon, melted butter, and salt until crumbly. Set aside one-third for topping.
Prepare Crust: Press two-thirds of the oat mixture into the pan to form the crust.
Make Peach Filling: In a separate bowl, toss peaches with sugar, cornstarch, lemon juice, and cinnamon. Spread over crust.
Add Topping: Sprinkle reserved oat mixture over peaches, pressing down gently.
Bake: Bake for 35-40 minutes until bubbly edges and golden brown topping.
Cool and Serve: Allow to cool completely before cutting into squares.

Notes

You can substitute other fruits like apricots or berries for the peaches.
Serve these bars with a scoop of vanilla ice cream for a delicious dessert.

Prep Time: 15 minutes
Cook Time: 35-40 minutes
Category: Dessert
Method: Baking
Cuisine: American

Nutrition

Serving Size: 1 bar
Calories: 240
Sugar: 15g
Sodium: 50mg
Fat: 9g
Saturated Fat: 5g
Unsaturated Fat: 3g
Trans Fat: 0g
Carbohydrates: 38g
Fiber: 2g
Protein: 3g
Cholesterol: 20mg

Keywords: Peach Cinnamon Oatmeal Crumb Bars, Peach Bars, Oatmeal Bars, Fruit Bars, Dessert Recipe