Cozy Blueberry Oat Bars

Featured in: Breakfast

These oat bars have a crunchy base made from oats, flour, and a pinch of brown sugar. Sweet, juicy blueberries are coated in sugar, layered onto the crust, and topped with crumbles. Bake them golden in 35 minutes after quick prep. Use regular or frozen berries, and gluten-free swaps are easy too.
Twistytaste.com
Updated on Thu, 27 Mar 2025 21:10:07 GMT
Blueberry Crumbly Bars Pin it
Blueberry Crumbly Bars | twistytaste.com

These breakfast bars blend juicy blueberries with hearty oats for a truly filling morning treat. The soft base holds sweet berries while the crunchy top gives you that amazing texture you'll crave.

Must-Have Ingredients

  • Old-fashioned oats: Gives that nice chew and holds everything together
  • All-purpose flour: Makes the base soft and cake-like
  • Brown sugar: Adds that hint of molasses and keeps things moist
  • Butter: Go for European-style if you can find it
  • Fresh blueberries: Try to grab wild ones for bigger flavor
  • Cornstarch: Keeps berry juice from making things soggy
  • Vanilla: Always go with the real stuff
  • Cinnamon: Brings that cozy warmth to every bite

Step-by-Step Guide

Get Your Oven Ready
Put your rack right in the middle. Heat to 375°F. Put parchment in your pan with extra hanging over the sides.
Mix Your Dry Stuff
Put oats, flour, brown sugar, baking soda, and salt in a bowl. Stir it all up good.
Add The Wet Ingredients
Drizzle melted butter and vanilla over everything dry. Stir until it looks like crumbs.
Make The Foundation
Push half your crumb mix into the pan. Make sure it's flat and even.
Load Up The Berries
Toss blueberries with sugar and cornstarch. Spread them all over your base.
Add The Top Layer
Scatter what's left of your oat mix over the berries. Press down just a little.
Pop It In The Oven
Bake for 35-40 minutes until it's golden and you see berry bubbles.
Let It Rest
Let it cool all the way in the pan. Use the parchment to lift it out. Cut with a sharp knife.
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Tasty oat-blueberry bars | twistytaste.com

Smart Kitchen Moves

Use parchment with extra hanging over the sides, try cutting with dental floss for clean edges, check if they're done with a toothpick, and turn the pan around halfway through baking time.

Keeping Them Fresh

On the counter: 3 days, in the fridge: 1 week, in the freezer: 3 months, to thaw: leave in the fridge overnight.

Health Perks

Lots of fiber from the oats helps your tummy, blueberries pack antioxidants, whole grains give you lasting energy, and you get sweetness from real fruit.

Changing With The Seasons

Summer: Try mixing different berries with some lemon zest, Fall: Chop in some apples and add more cinnamon, Winter: Mix in dried cranberries, Spring: Chop up fresh strawberries to add.

Great Combos To Try

Morning time: Grab some Greek yogurt too, Snack break: Wash down with almond milk, Dessert: Throw a scoop of vanilla ice cream on top, Brunch: Serve with a fruity smoothie.

Our Story

We always take these bars camping with us now. They don't fall apart and travel so well on the trails.

Even More Good Stuff

Make them when you've got time for busy days later, adjust how sweet you want them, take them anywhere without making a mess, and spend less on snacks.

Homemade oat-blueberry squares Pin it
Homemade oat-blueberry squares | twistytaste.com

You don't have to pick between healthy and tasty - these bars prove you can have both when you need quick options your family will actually eat.

Frequently Asked Questions

→ Are frozen blueberries okay?
Absolutely! You don’t need to defrost them—just toss them in.
→ How do I store leftovers?
Keep them in a sealed container at room temperature for up to 3 days or a week in the fridge.
→ Can I make it gluten-free?
Sure thing, swap the oats for a gluten-free version and use a 1:1 gluten-free flour.
→ What other fruits can I try?
Chopped strawberries, blackberries, or raspberries are all great options.
→ Do these freeze well?
Yes, wrap them tightly and freeze for up to 3 months. Thaw in the fridge overnight.

Blueberry Oatmeal Bars

Soft oat bars packed with juicy blueberries, great for dessert or snacks.

Prep Time
15 Minutes
Cook Time
40 Minutes
Total Time
55 Minutes

Category: Breakfast

Difficulty: Intermediate

Cuisine: American

Yield: 16 Servings (16 bars)

Dietary: Vegetarian

Ingredients

→ Dry Base

01 1/2 teaspoon cinnamon
02 1/4 teaspoon baking soda
03 1/3 cup light brown sugar
04 1 cup old-fashioned oats
05 1/4 teaspoon salt
06 3/4 cup all-purpose flour

→ Wet Ingredients

07 1 teaspoon vanilla extract
08 6 tablespoons unsalted butter, melted

→ Filling

09 2 teaspoons cornstarch
10 1 cup blueberries
11 1/4 cup granulated sugar

Instructions

Step 01

Heat your oven to 375°F (190°C). Line an 8-inch pan with parchment paper, leaving extra on the sides so you can easily lift everything out later.

Step 02

Mix up the oats, flour, cinnamon, baking soda, brown sugar, and salt in a bowl. Stir in the melted butter and vanilla. You'll end up with a crumbly texture.

Step 03

Press half the crumbly mix firmly into the bottom of your lined baking pan, making sure it's nice and even.

Step 04

Combine the blueberries, cornstarch, and sugar in a small bowl. Stir them gently until the berries are fully coated.

Step 05

Sprinkle what’s left of the crumbly mixture on top of the blueberries. Gently press it down to hold everything together.

Step 06

Pop the pan in the oven for 35-40 minutes. You'll know it's done when the top is golden brown and the blueberries are bubbling. Let everything cool completely before pulling it out with the parchment and cutting into squares.

Notes

  1. Zest a lemon over the blueberry mix for a fresh citrus twist.
  2. Swap a bit of the oats for almond meal to add crunch.
  3. Store in a sealed container and they'll stay good for about 5 days.

Tools You'll Need

  • 8-inch square baking pan
  • Parchment paper
  • Mixing bowls
  • Measuring cups and spoons

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Wheat
  • Dairy

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 180
  • Total Fat: 8 g
  • Total Carbohydrate: 25 g
  • Protein: 2 g