Shortbread -
1 cup unsalted butter (room temperature)
3/4 cup sugar
1/2 cup almond paste (room temperature)
1 large egg (room temperature)
1 tsp almond extract
2 cups all purpose flour
Glaze -
1/2 cup unsalted butter (room temperature)
1/4 cup heavy cream
2 1/2 cups to 3 cups powdered sugar
1 tsp almond extract
1/2 cup sliced almonds
Directions:
1. Preheat oven to 350F, lightly butter and flour 9 x 13 pan.
2. Cream the butter and sugar together until light and fluffy, about 3 to 4 minutes, scraping down the sides of the bowl as necessary.
3. Add the egg, almond paste, and extract, and beat until well combined. Make sure to smooth out any lumps of almond paste.
4. Add flour and gently mix until just blended and no dry flour remains. Don't over mix.
5. Spread the dough out evenly in the baking pan.
6. Bake for 25 to 30 minutes, just until set and starting to turn golden along the edges of the pan. Don't over bake as you want your shortbread to be tender.
7. Cool on a rack fo 10 minutes before glazing.
8. To make glaze, heat butter and cream in medium saucepan until the butter melts. Stir in 2 1/2 cups of powdered sugar, and extract, and whisk until glaze is smooth. If it seems to too thin, add a bit more powdered sugar, and if it seems too thick, add a touch more cream. Stir in the sliced almonds and pour over the warm shortbread. Ease glaze to the edges with an offset spatula, working quickly.
9. Let pan cool completely before slicing.