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straight on shot of a stack of four chocolate hazelnut oat bars

Chocolate Chip Hazelnut Oat Bars (Vegan + Gluten-Free)

  • Author: Allison
  • Total Time: 28 minutes
  • Yield: 9-12 bars 1x
  • Diet: Vegan


These vegan, gluten-free chocolate chip hazelnut oat bars are simply delicious! A generous amount of hazelnut butter is mixed with coconut oil, oats, oat flour, coconut sugar, maple syrup, and chocolate chips for a wholesome treat.


  • 2 tablespoons ground flax + 3 tablespoons water
  • 1/2 cup hazelnut butter
  • 2 tablespoons coconut oil, softened
  • 1/2 cup coconut sugar
  • 2 tbsp pure maple syrup
  • 2 tbsp almond milk
  • 1 tsp vanilla extract
  • 1/2 tsp baking soda
  • 1/4 tsp fine sea salt
  • 1 cup oat flour*
  • 1 1/2 cups rolled oats
  • 1/2 cup chocolate chips


  1. Preheat the oven to 350 degrees F and line a square baking dish (8×8-inch) with parchment paper for easy lift out.
  2. Mix the ground flax with the water in a large mixing bowl. Wait a couple of minutes for it to thicken before adding the hazelnut butter, coconut oil, coconut sugar, maple syrup, almond milk, and vanilla. Whisk to combine. Then, one by one, add the baking soda, salt, oat flour, oats, and chocolate chips, mixing after each addition.
  3. Transfer the mixture into the prepared baking dish and bake for 20 minutes.
  4. Let the bar cool in the pan for 30 minutes before lifting out and transferring to a wire rack to finish cooling.
  5. Slice into 9-12 squares and enjoy.
  6. Store in an airtight container, either at room temperature for a softer bar or in the fridge for a firmer bar.


*You can easily make oat flour in your food processor! Just grind large flake rolled oats until a flour-like texture forms.

No hazelnut butter? Any nut or seed butter will work here. Try peanut, cashew, almond, or sunflower seed butter, or even tahini!

An earlier version of this recipe was oil-free and contained less flax. Since revisiting and re-testing the recipe, I have found that the addition of coconut oil and an extra tablespoon of flax results in bars that are less sticky and crumbly. They do work without oil, but they are more crumbly.

If your nut butter is salted, reduce the salt to a small pinch.

  • Prep Time: 8 minutes
  • Cook Time: 20 minutes
  • Cuisine: North American

Keywords: vegan chocolate hazelnut oat bars, gluten-free hazelnut oat chocolate chip bars