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Key Lime Bars with a Gingersnap Crust

Posted By Shoshana On April 28, 2010 @ 11:13 pm In bar cookies,fruit,gluten-free,soy-free | 3 Comments

Key Lime Bars with a Gingersnap Crust

Makes 12-16 bars depending on the size

For crust
1 cup gingersnap or graham cracker crumbs (gluten-free gingersnap crumbs worked well to make a gluten-free bar)
1/4 cup sugar
4 tablespoons (1/2 stick) margarine.

For filling
3 large eggs
1 1/4 cups sugar
3 tablespoons cornstarch
3/4 teaspoon baking powder
1/3 cup key lime juice (fresh or from frozen concentrate, bottled is not as tasty in this recipe)
Zest of 2 limes
Confectioner’s sugar for dusting

Preheat the oven to 350 F degrees.  Line an 8X8 inch baking pan with foil so that the foil hangs over the sides of the pan, and spray the foil with nonstick baking spray.

If starting with whole gingersnaps process them in the food processor until finely ground. Place the margarine in a medium bowl and microwave until melted. Add sugar and crumbs and stir until well combined. Press crumb mixture evenly into the bottom of pan. Bake for 10-12 minutes or until lightly golden. Let the crust cool while making the filling.

Place the eggs in the bowl of an electric mixer fitted with the whisk attachment and whisk the eggs on medium-high speed until they thicken, about 2 minutes.  Slowly add the sugar while continuing to whip on medium-high, until the mixture is very thick and pale colored, about 5 minutes. 

Combine the cornstarch and baking powder and stir together to blend well.  Add to the egg mixture and blend together on medium speed, scraping down the sides of the bowl if necessary.  Add the lime juice and zest and mix well.  Pour the filling over the the crust and bake for 30-35 minutes, until the top is set and light golden and a tester inserted into the center comes out clean or slightly damp.  Cool completely on a wire rack. 

Lift the cooled bars from the pan using the foil and place on a cutting board.  Peel the foil away from the sides and cut into 2-inch squares.  Dust with confectioner’s sugar and serve.


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