Frozen Lemon Pie with Blueberry Sauce

~from Savoring Time in the Kitchen
For the crust (Make first)

1-1/2 cups crushed graham crackers
1/4 cup sugar
1 teaspoon fine sea salt
6 tablespoons butter, melted

Vegetable cooking spray

Preheat oven to 325°

In a food processor, pulse crackers, sugar and salt until finely crushed and well combined. Add melted butter, and process until thoroughly combined. Alternatively, you can crush the graham crackers in a zipper bag with a rolling pin or meat mallet. Then, add the other ingredients until well blended.

Lightly grease a 9 inch pie plate with baking spray. Press the graham cracker mixture on the bottom and sides of the pie plate.

Bake crust 8 to 10 minutes or until lightly browned. Cool.

For the filling:

1 (14-oz.) can sweetened condensed milk
Lemon zest from one large lemon (about a tablespoon)
Lemon Juice from 2-3 lemons (about 1/2 cup)

3 large egg yolks
1/4 cup buttermilk

Preheat oven to 325°.

Whisk the first 3 ingredients in a bowl.

In a medium bowl, beat egg yolks at high speed for 4 to 5 minutes, until yolks become pale and create ribbons on the surface when the beater is lifted. Slowly whisk in sweetened condensed milk mixture until thoroughly combined. Then add buttermilk and whisk until combined. Pour the mixture into baked and cooled crust.

Bake pie at 325° for 20 to 25 minutes, until set around edges. The pie will still be slightly jiggly. Cool pie on a wire rack for 1 hour.

Lightly spray a large piece of plastic wrap and cover pie. Freeze for at least 4 to 6 hours or overnight.

Keeps well in freezer for several days. 
For the Blueberry Topping:

(Makes about 1-1/2 cups)

2 cups fresh blueberries, divided
1/3 cup sugar
3 tablespoons water
2 tablespoons fresh lemon juice
Zest from one large organic lemon (about 1 tablespoon)

In a small saucepan, over medium heat, bring 1 cup blueberries, sugar, water, lemon juice, and lemon zest to a boil. Reduce the heat to low, and simmer, stirring occasionally, for about 10-15 minutes, or until mixture has thickened and berries begin to break down. Remove from heat, and stir in remaining 1 cup blueberries. Cool completely; cover and chill until ready to use.

When ready to serve, remove pie from freezer. Using a large knife dipped in warm water, cut pie into slices and serve with sweetened whipped cream and blueberry sauce.

Adapted from Southern Living Magazine