- 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
- Preheat oven to 350 degrees F.
- Place first 5 ingredients in a medium bowl; beat with a mixer at medium speed until creamy (about 2 minutes). Lightly spoon flour into a dry measuring cup; level with a knife. Gradually add this flour to butter mixture, beating at low speed until mixture resembles coarse meal. 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. Bake at 350 degrees F for 12 minutes or until mixture is just beginning to brown.
- Combine granulated sugar, flour, baking powder, and salt in a medium bowl, stirring with a whisk. Add lime juice and eggs, stirring with a whisk until smooth. Pour mixture over crust. Bake at 350 degrees F for 12 minutes. Remove pan from oven (do not turn oven off); sprinkle remaining 2/3 cup flour mixture evenly over egg mixture. Bake an additional 8 to 10 minutes or until set. Remove pan from oven; cool in pan on a wire rack. Sprinkle with powdered sugar.