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Lemon Oatmeal Crumble Bars

Tangy lemon bars with a buttery oat crumble topping, perfect for dessert or snack time.
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Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Servings: 16 bars
Course: Dessert, Snack
Cuisine: American, Baking
Calories: 210

Ingredients
  

Crust & Crumble
  • 1 cup unsalted butter softened
  • 0.5 cup granulated sugar
  • 1 cup all-purpose flour
  • 2 cups old-fashioned oats
  • 0.5 tsp baking soda
  • 0.25 tsp salt
Lemon Filling
  • 3 eggs large
  • 1 cup granulated sugar
  • 0.25 cup all-purpose flour
  • 0.25 cup fresh lemon juice
  • 1 tsp lemon zest
  • pinch salt

Equipment

  • Mixing bowls
  • 9x13-inch baking pan
  • Whisk
  • Measuring cups and spoons

Method
 

  1. Preheat oven to 350°F (175°C) and line a 9x13-inch pan with parchment paper.
  2. In a large bowl, cream butter and sugar until light and fluffy. Add flour, oats, baking soda, and salt. Mix until crumbly.
  3. Reserve 1 cup of oat mixture for topping. Press the rest evenly into the prepared pan to form the crust.
  4. Bake crust for 10–12 minutes until lightly golden.
  5. In a medium bowl, whisk together eggs, sugar, flour, lemon juice, zest, and a pinch of salt until smooth.
  6. Pour lemon filling over pre-baked crust.
  7. Sprinkle reserved oat mixture evenly on top.
  8. Bake for 25–30 minutes until filling is set and crumble is golden.
  9. Cool completely, then refrigerate 1–2 hours. Cut into bars and dust with powdered sugar.

Notes

Can be stored in an airtight container for up to 5 days. Freeze for longer storage.