Blueberry Oatmeal Crumble Pie Bars are so easy and delicious! A simple jammy maple sweetened blueberry filling is sandwiched between two layers of a buttery oatmeal crumb mixture. Yields 9 to 16 – depending on how you cut it.

Blueberry Oatmeal Crumble Pie Bars

What’s super easy, delicious and loved by everyone in our house?

Answer: these blueberry crumble pie bars.

Last week, I took a much needed time off to get some things done on the backend of this blog. However, I did manage to bake these and remembered how much I love them. Especially with ice cream.

Blueberry Oatmeal Crumble Pie Bars

A simple fresh maple sweetened blueberry filling is sandwiched between a simple oat crumble mixture. It’s really that easy.

Oh and bonus! 1 small square (not including the ice cream) is roughly 129 calories!

Ingredients for Blueberry Oatmeal Crumble Pie Bars

To Make These Blueberry Oatmeal Crumble Pie Bars You Will Need:

  • unbleached all-purpose flour
  • old fashioned rolled oats
  • brown sugar
  • cinnamon
  • nutmeg
  • salt
  • melted unsalted
  • vanilla extract
  • almond extract
  • blueberries
  • maple syrup
  • cornstarch
  • water

dry ingredients in mixing bowl

In a mixing bowl, measure and add 1 cup unbleached all-purpose flour, 2/3 cup old fashioned rolled oats (not quick oats), 1/3 cup brown sugar, 1/2 teaspoon ground cinnamon, 1/4 teaspoon of each ground nutmeg, baking soda and salt.

pouring in butter

Stir to combine and then pour in 8 tablespoons (1 stick or 1/2 cup) melted unsalted butter.

wet ingredients added to dry

Next, measure and pour in 1 teaspoon pure vanilla extract and 3/4 teaspoon almond extract. Obviously, if you have an allergy, simply omit the almond extract. 

crumb mixture

Use a spatula combine until crumbly.

half crumb mixture added to lined pan

Add half of the crumb mixture into the bottom of the pan.

pressed bottom crust in pan

Press evenly with the bottom of the pan with the flat side of a glass or measuring cup. Set this off to the side.

blueberries in saucepan

In a medium sauce pan, add 1 pint (roughly 2 cups) fresh blueberries.

adding maple syrup to blueberries

Pour in 1/4 cup water and 2 tablespoons pure maple syrup.

cornstarch and vanilla to blueberries

Add 1 tablespoon cornstarch and a splash of vanilla extract.

stir ingredients into blueberries

Stir and heat over medium-low.

jammy blueberry filling

Give the blueberries a smash. Once the blueberry filling is thick and glossy remove off of the heat.

add filling to bottom crust

Pour the warm filling over the crumb pie base.

filling spread out evenly on crust

Spread it evenly, corner to corner.

top with remaining crumb mixture

Sprinkle the remaining crumb mixture over top.

baked Blueberry Oatmeal Crumble Pie Bars

Bake on the middle rack of your preheated 350° for 20 to 25 minutes or until the filling is bubbling and the crumb topping is golden brown.

cut Blueberry Oatmeal Crumble Pie Bars

Cool the bars completely before running a knife around the edges and using the parchment paper as handles to lift the bars out of the pan.

Blueberry Oatmeal Crumble Pie Bars

Cut and serve.

Blueberry Oatmeal Crumble Pie Bars with scoop of vanilla ice cream

Best served slightly warm with vanilla ice cream!

fork in Blueberry Oatmeal Crumb Pie Bars

Enjoy! And if you give this Blueberry Oatmeal Crumble Pie Bars recipe a try, let me know! Snap a photo and tag me on twitter or instagram!

missing bite in Blueberry Oatmeal Crumb Pie Bars

Blueberry Crumb Pie Bars
Yield: 16

Blueberry Crumble Pie Bars

Blueberry Oatmeal Crumble Pie Bars are so easy and delicious! A simple jammy maple sweetened blueberry filling is sandwiched between two layers of a buttery oatmeal crumb mixture. Yields 9 to 16 - depending on how you cut it.

Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes

Ingredients

FOR THE CRUMB MIXTURE:

  • 1 cup unbleached all-purpose flour
  • 2/3 cup old fashioned rolled oats
  • 1/3 cup light brown sugar
  • 1/2 teaspoon ground cinnamon
  • 1/4 teaspoon ground nutmeg
  • 1/4 teaspoon baking soda
  • 1/4 teaspoon fine salt
  • 8 tablespoons melted unsalted butter
  • 1 teaspoon pure vanilla extract
  • 3/4 teaspoon pure almond extract (see notes)

FOR THE FILLING:

  • 1 pint blueberries (about 2 cups)
  • 1/4 cup water
  • 2 tablespoons maple syrup
  • 1 tablespoon cornstarch
  • splash of pure vanilla extract

Instructions

PREPARE THE CRUMB MIXTURE:

  1. Preheat your oven to 350° and line a 8x8 square baking pan.
  2. In a mixing bowl, measure and add flour, oats, sugar, cinnamon, nutmeg, soda and salt. Pour in the melted butter, vanilla and almond extract.
  3. Press 1/2 into prepared pan and set aside.

PREPARE THE FILLING:

  1. In a saucepan add the blueberries, water, maple syrup, cornstarch and a splash of vanilla extract.
  2. Bring to a simmer, smash and stir as you go until thick.
  3. Spread filling over the bottom and crumble remaing crumb mixture over top of the blueberries.
  4. Bake on the middle rack of your preheated oven for 25 mintues, rotate halfway through.
  5. Let cool before running a knife around the outside of the bars and using the parchment paper to lift it out of the pan.
  6. Slice and serve as is or with vanilla ice cream.

Notes

If allergic, omit almond extact.

Nutrition Information:

Yield:

16

Serving Size:

1

Amount Per Serving: Calories: 129Total Fat: 6gSaturated Fat: 4gTrans Fat: 0gUnsaturated Fat: 2gCholesterol: 15mgSodium: 56mgCarbohydrates: 17gFiber: 1gSugar: 7gProtein: 1g