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–+ servings
Two gluten free lemon oat bars stacked on top of each other.

Creamy Gluten Free Lemon Oat Bars

Sandi Gaertner
Decadent gluten free lemon oat bars with a creamy lemon filling.
5 from 5 votes
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Course Gluten Free Cookies and Bar Recipes, Gluten Free Dessert Recipes
Cuisine American
Servings 16 Bars
Calories 227 kcal

Ingredients
  

Crust:

  • 1 cup gluten free flour blend Bob's 1:1 use 146.7 grams
  • 1 ½ cups certified gluten free oats 152.9 grams/see note
  • ¾ cup brown sugar
  • 1 teaspoon baking soda aluminum-free
  • ¼ teaspoon salt
  • ½ cup unsalted butter melted

Lemon Filling:

  • 12 ounces condensed milk
  • 1 egg yolk
  • ½ cup lemon juice
  • 3 tablespoons heavy cream
  • 1 tablespoon lemon zest

Instructions
 

  • Preheat the oven to 350º F and put the oven rack to the middle position.
  • In a large mixing bowl, add the crust ingredients and mix well.
  • Add the lemon juice, heavy cream, lemon zest, and condensed milk to a bowl. Whisk until creamy.
  • Separate the egg yolk from the egg white and add the egg yolk only to the bowl with the lemon mixture. Whisk it.
  • Grease an 8x8 pan, or line it with parchment paper. Add 1/2 of the crust mixture. Press it down firmly.
  • Pour the lemon mixture over the crust.
  • Add the remaining crust crumbles over the lemon mixture.
  • Bake for 25-30 minutes. Remove from the oven to a cooling rack.
  • Let the bars cool to room temperature, then cover the pan and put it into the refrigerator for an hour to chill.
  • Slice when the bars are cool.

Notes

  1. I tested this recipe with Bob's Red Mill 1:1 Gluten Free Flour Blend. Other blends should also work.
  2. Add one teaspoon if your blend doesn't contain xanthan or guar gum.
  3. It is critical to use certified gluten free oats. I used Bob's Red Mill Certified Gluten Free Rolled Oats.
  4. To make this recipe dairy-free, use plant-based butter and coconut condensed milk.
  5. Store the bars in an airtight container in the refrigerator for up to 4 days. Freeze the bars in a freezer-safe zip-style bag.

SPECIAL NOTE

Please know that every gluten free flour blend has a different starch to grain ratio. If you use a blend I didn't test, you may need to adjust your moisture levels in your baked goods.

Nutrition

Serving: 1barCalories: 227kcalCarbohydrates: 33gProtein: 4gFat: 10gSaturated Fat: 6gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gTrans Fat: 0.2gCholesterol: 38mgSodium: 137mgPotassium: 134mgFiber: 2gSugar: 22gVitamin A: 292IUVitamin C: 4mgCalcium: 84mgIron: 1mg
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Nutrition Disclaimer

Nutritional information is an estimate provided to you as a courtesy. You should calculate the actual nutritional information with the products and brands you are using with your preferred nutritional calculator.