Key Lime Bars

Step 1

Preheat oven to 350F (175C) and line a 9x9" (23x23cm) baking pan with foil.  Set aside.

Step 2

Combine graham cracker crumbs, sugar, and brown sugar in a large bowl.

Step 3

Add melted butter and stir well.

Step 4

Press evenly and firmly into the bottom and up the sides of prepared pan.

Step 5

Bake on 350F (175C) for 7-8 minutes.  Allow to cool slightly while you prepare your key lime filling.

Step 6

In a large bowl, whisk together sweetened condensed milk, sour cream, and lime zest (if using) until mixture is smooth.

Step 7

Gradually whisk in key lime juice until mixture is smooth.

Step 8

Pour into prepared pie crust and bake for 8-10 minutes, until mixture is set if you jiggle the pan.

Step 9

Remove from oven and allow to cool to room temperature, then transfer to refrigerator and allow to chill 4-6 hours before cutting.

Step 10

Top with whipped cream, if desired, and serve.