Between the jammy raspberry filling, fresh lemon zest, and chewy oat layers, there’s a lot to love about these Raspberry Lemon Oat Bars! They’re sweet, tangy, chewy, and perfect for breakfast, snacking, or a little afternoon treat. As an added bonus, they’re also easy to make, vegan, and free of gluten and refined sugar.

Send this recipe to your email for later

Sweet raspberries and zesty lemon are a match made in heaven, and these Raspberry Lemon Oat Bars are the proof! They combine a bright, jammy raspberry filling with fresh lemon and chewy oat layers for a simple treat that’s both filling and flavorful. Plus, they’re naturally sweetened, totally vegan, and gluten-free!

I originally made these bars as a way to use up some extra raspberries and bananas, and they’ve quickly become one of my favorite make-ahead snacks. Everything comes together fast and there’s no need to make a million different components. Just mix, layer, bake, and try your very best not to cut into them before they’ve cooled completely. (Easier said than done, trust me!)

Whether you enjoy one with your morning coffee, pack one for an afternoon snack, or sneak a square straight from the fridge when you’re passing through the kitchen, these bars never seem to last long. Give them a try and let me know what you think!

Why you’ll love these Raspberry Lemon Oat Bars

They’re fruity and flavorful, pairing raspberries with an extra zing of citrusy lemon.
They’re naturally vegan and free of dairy, eggs, and gluten.
They come together fast and require just six simple ingredients.
They’re a lighter snack option, with 3 grams of fiber and less than 100 calories per serving.
They’re free of refined sugar and naturally sweetened with maple syrup and fruit.

Raspberry Lemon Oat Bar ingredients

Raspberries create the bright, fruity filling that runs right through the center of these bars. I used fresh raspberries, but frozen (and thawed) raspberries would also be tasty.
Quick-cooking oats form the base and topping, giving the bars their soft, chewy texture. They also help absorb moisture from the fruit and banana. Stick to certified gluten-free oats if needed!
Bananas act as both a natural sweetener and binder, helping hold the bars together without the need for eggs or butter. As an added bonus, they’re a great source of fiber and potassium.
Vanilla extract adds a subtle sweetness and brings all the flavors together.
Maple syrup sweetens up the bars and rounds out the tart flavors of the fruit.
Lemon brightens up the entire recipe. You’ll use both the juice and zest for this recipe — the juice adds tanginess to the raspberry layer while the zest delivers an extra layer of lemony goodness.

How to serve Raspberry Lemon Oat Bars

Top with a big scoop of Greek yogurt to bump up the protein content for a more balanced breakfast.
Enjoy as an afternoon snack with a hot cup of tea next time you need a pick-me-up.
Serve with a smoothie for a fast and filling morning meal.
Crumble a bar over yogurt and fresh berries to whip up a quick and easy (and absolutely delicious!) parfait.

Substitutions & variations

Raspberries – Fresh or frozen raspberries both work well in this recipe! If using frozen raspberries, just make sure you thaw them first and drain off any excess liquid before you toss them in the food processor. If you’re feeling creative, you can also swap them for blackberries, strawberries, blueberries, or a mix.
Quick-cooking oats – I haven’t personally tested this recipe with rolled oats, but they should be fine if that’s what you have on hand. They’ll probably give the bars a heartier, chewier texture and may make them a little less soft.
Maple syrup – Feel free to substitute honey if you don’t need the bars to be vegan.
Lemon – Lime zest and juice would add a fun twist and pair surprisingly well with the berries!
Stir in some spices – A pinch of cinnamon or cardamom would both add a little more warmth to these vegan oat bars.
Mix in coconut – Stir a handful of shredded coconut into the oat mixture for extra texture and flavor.
Make them extra berry-filled – Fold a handful of whole raspberries into the filling for even more texture and fruity goodness!

Quick recipe tips

Use ripe bananas with plenty of brown spots if possible; they’re sweeter and much easier to mash!

Let the bars cool completely — I know it can be tempting to dig in right away, but letting them cool helps the layers set and makes them easier to cut.

Press the bottom layer firmly to create a sturdy base that holds together better after baking.

Avoid pressing down too much on the top layer and add the remaining oat mixture in small pieces to keep the raspberry filling from popping through.

Double up! These bars freeze well, so consider making an extra batch to keep a homemade snack, breakfast, or dessert ready whenever you want.

Step-by-step instructions

Prep the pan: Preheat the oven to 350°F. Line an 8×8-inch baking dish with parchment paper.
Make the oat mixture: In a large bowl, stir together the oats, mashed banana, maple syrup, and vanilla extract until well combined.

Prepare the raspberry filling: Zest the lemon and set the zest aside. Add the raspberries and lemon juice to a food processor and pulse until mostly smooth and jam-like.

Create the bottom layer: Press half of the oat mixture evenly into the bottom of the prepared baking dish, covering the surface completely.

Add the filling: Spread the raspberry mixture evenly over the oat layer, then sprinkle the lemon zest over the top.
Add the topping: Spoon the remaining oat mixture over the raspberry layer, adding small amounts at a time to create an even top layer. Avoid pressing down, as this can cause the raspberry filling to push through.
Bake: Bake for 25-30 minutes, or until the top is lightly golden and set.
Cool and slice: Let the bars cool completely in the pan before slicing into 9 bars and serving.

Make ahead & storage

I always love having a batch of these bars tucked away in the fridge. They’re easy to grab, help satisfy your sweet cravings, and can instantly brighten up any morning. Plus, they hold up well in the fridge, making them a great make-ahead option for busy weeks!

Meal prep

Prepare in advance: Bake the bars up to 5 days ahead and store them in the refrigerator until you’re ready to enjoy.
Perfect for meal prep: Slice the bars and store them individually for an easy grab-and-go snack or breakfast throughout the week.

Storing leftovers

Fridge: Store leftover bars in an airtight container in the refrigerator for up to 5 days.
Layer carefully: If stacking the bars, place a sheet of parchment paper between layers to prevent sticking.
Serve chilled or at room temperature: These bars are delicious straight from the fridge or after sitting at room temperature for a few minutes.

Freezing

Freeze for longer storage: Place the cooled bars in a freezer-safe container or bag and freeze for up to 2 months.
Thaw before serving: Transfer to the fridge overnight or let sit at room temperature until thawed.
Freeze individually: Wrapping bars individually makes it easy to grab a single serving whenever hunger strikes.

FAQ

Yes! Frozen raspberries work well, but be sure to thaw them first and drain off any extra liquid before you blend. Too much moisture can make the raspberry layer softer and may affect the texture of the bars.

I haven’t personally tested this recipe with rolled oats, but they should be fine. However, the bars may have a slightly chewier texture and might not be quite as soft.

Yes! These bars are 100% vegan as written since they’re made without eggs, dairy, or other animal-based ingredients.

Yes, but make sure you use certified gluten-free oats, especially if you have a celiac disease or a sensitivity to gluten.

Definitely! Try swapping the raspberries for strawberries, blueberries, blackberries, or a mixed berry combination for a fun twist.

The most common reason is slicing them before they’ve had time to cool. Make sure the oat mixture is pressed firmly into the pan and allow the bars to cool completely before cutting so they have time to set.

Stay in the loop!

Healthy eating tips & recipes delivered directly to your inbox

More plant-based breakfasts

Raspberry Lemon Oat Bars

With a sweet raspberry filling, bright lemon flavor, and chewy oat layers, these easy oat bars make a delicious breakfast, snack, or healthy dessert!

Course Breakfast, Dessert, Snack

Cuisine American

Prep Time 10

Cook Time 30

Total Time 40

Servings bars

Calories 90kcal

Ingredients

1 cup raspberries
1 1/2 cups quick-cooking oats
1 cup mashed banana about 2 medium bananas
1/4 teaspoon vanilla extract
1/4 cup maple syrup
1 lemon zested and juiced

Instructions

Preheat oven to 350°F. Line an 8×8-inch baking dish with parchment paper.
Add the oats, mashed banana, maple syrup, and vanilla extract to a bowl. Mix until well combined.
Zest the lemon and set the zest aside. Add the raspberries and lemon juice to a food processor and pulse until mostly smooth and jam-like in texture.
Press half of the oat mixture into the bottom of the prepared baking dish, making sure it covers the bottom completely.
Spread the raspberry mixture evenly over the oat layer, then sprinkle the lemon zest on top.
Carefully add the remaining oat mixture over the raspberry layer, scooping small amounts at a time to create the top layer. Avoid pressing down, as this can push the raspberry filling toward the top.
Bake for 25 to 30 minutes, or until the top layer is golden and cooked through.
Allow the bars to cool completely before slicing.