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Lemon Oat Bars

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A bright and comforting bar cookie with a tender oat crumble and creamy lemon center, perfect for spring picnics or afternoon tea.

  • Author: daniel-kim
  • Prep Time: 15 minutes
  • Cook Time: 34 minutes
  • Total Time: 50 minutes
  • Yield: 12 bars 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

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  • 7 Tablespoons unsalted butter, softened
  • 3/4 cup packed light or dark brown sugar
  • 1 teaspoon pure vanilla extract
  • 1 cup all-purpose flour
  • 1 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1 cup old-fashioned whole oats or quick oats
  • 1 (14-ounce) can full-fat sweetened condensed milk
  • 6 Tablespoons lemon juice
  • 1 Tablespoon lemon zest

Instructions

  1. Preheat the oven to 350°F (177°C) and line an 8-inch square pan with parchment paper.
  2. Beat the softened butter and brown sugar on medium-high speed until well combined.
  3. Add the vanilla extract and continue to beat until fully incorporated.
  4. Mix in the all-purpose flour, baking powder, salt, and oats until crumbly.
  5. Press a bit more than half of the mixture into the bottom of the prepared pan and bake for 12 minutes.
  6. Whisk together the sweetened condensed milk, lemon juice, and lemon zest until thickened.
  7. Pour the lemon filling over the hot crust and sprinkle with the remaining crumble mixture.
  8. Bake for an additional 22 to 25 minutes, or until the edges are lightly browned.
  9. Allow to cool completely on a wire rack, then cut into squares.

Notes

For clean slices, chill briefly before cutting. Store in an airtight container at room temperature for up to 2 days or refrigerate for up to 5 days.

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