How to Make Key Lime Squares

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By Julie Henley
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Make Key Lime Squares

These key lime squares are a tart alternative to the traditional lemon squares. They are pretty labor intensive but worth the work. Fresh key lime juice makes the recipe.

Difficulty: Moderately Challenging

Instructions

Things You'll Need:

1/4 cup butter, softened
1/4 cup granulated sugar
1 teaspoon grated lime rind
1/8 teaspoon salt
1/8 teaspoon lemon extract
1 cup all-purpose flour
Cooking spray
2/3 cup granulated sugar
3 tablespoons all-purpose flour
3/4 teaspoon baking powder
1/8 teaspoon salt
1/2 cup fresh key lime juice
3 large eggs
1 tablespoon powdered sugar
8-inch square baking pan

Step 1

Preheat oven to 350°
Step 2

Put first 5 ingredients in a medium bowl; beat with a mixer at medium speed until creamy (about 2 minutes).
Step 3

Lightly spoon 1 cup flour into a dry measuring cup; level with a knife. Gradually add 1 cup flour to butter mixture, beating at low speed until mixture resembles coarse meal.
Step 4

Gently press two-thirds of mixture (about 1 1/3 cups) into bottom of an 8-inch square baking pan coated with cooking spray; set remaining 2/3 cup flour mixture aside.
Step 5

Bake at 350° for 12 minutes or until just beginning to brown.
Step 6

Combine 2/3 cup sugar, 3 tablespoons flour, baking powder, and 1/8 teaspoon salt in a medium bowl, stirring with a whisk. Add lime juice and eggs, stirring with a whisk until smooth.
Step 7

Pour mixture over crust. Bake at 350° for 12 minutes.
Step 8

Remove pan from oven (do not turn oven off); sprinkle remaining 2/3 cup flour mixture evenly over egg mixture.
Step 9

Bake an additional 8 to 10 minutes or until set. Remove from oven; cool in pan on a wire rack.
Step 10

Sprinkle evenly with powdered sugar.
Step 11

Cut the squares and serve on a platter.