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Delicious Lemon Oatmeal Crumble Bars served on a plate

Lemon Oatmeal Crumble Bars

These Lemon Oatmeal Crumble Bars are a bright and comforting dessert made with oats, lemon juice, and a buttery crumble, perfect for any occasion.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 9 bars
Course: Dessert, Snack
Cuisine: American, Baking
Calories: 200
Ingredients Method Notes

Ingredients
  

For the Crumble Base
  • 1 cup oats (old-fashioned rolled oats are best)
  • 1 cup all-purpose flour
  • 1/2 cup brown sugar, packed Light or dark brown sugar can be used.
  • 1/2 cup butter, softened Store-brand butter works fine.
  • 1/4 cup granulated sugar
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
For the Lemon Layer
  • 1/4 cup lemon juice (fresh is ideal) Bottled lemon juice can be used if fresh is not available.
  • 1 teaspoon lemon zest
  • 1 large egg

Method
 

Preparation
  1. Preheat your oven to 350°F (175°C). Grease an 8x8-inch baking dish or line it with parchment for easy cleanup.
  2. In a medium bowl, mix together the oats, flour, brown sugar, baking soda, and salt until evenly combined.
  3. Add the softened butter and mix until the mixture is crumbly and clumpy, resembling damp sand.
  4. Press about half of the crumble mixture into the bottom of the prepared baking dish to form a sturdy base.
Making the Lemon Layer
  1. In another bowl, whisk together the granulated sugar, lemon juice, lemon zest, and egg until smooth and frothy.
  2. Pour the lemon mixture evenly over the crust.
  3. Crumb the remaining oat mixture over the lemon layer.
Baking
  1. Bake for 25–30 minutes, or until the top is golden brown and the edges are lightly browned.
  2. Let the bars cool completely before cutting into squares or rectangles.

Notes

These bars can be stored in the fridge for a chewier texture. You can double the recipe for larger batches.