Preheat oven to 400 degrees F.
Grease a 10x15" non-stick jelly roll pan with shortening. Set aside.
Prepare the cake: Bring shortening, butter, and water to a boil.
½ cup shortening, ½ cup butter, 1 cup water
Place flour, sugar, baking soda, and salt in large mixing bowl.
2 cups granulated white sugar, 2 cups all-purpose flour, 1 tsp. baking soda, 1 tsp. salt
Pour hot butter mixture over flour mixture in the bowl. Use an electric mixer to beat for 1 minute on medium speed.
Slowly add the vanilla, almond extract, buttermilk, and eggs last. Beat for one more minute, and then pour batter into prepared pan.
1 tsp. vanilla, ½ teaspoon almond extract, ½ cup buttermilk, 2 eggs
Bake at 400 degrees F for 20 minutes.
Place cake on a wire rack to cool.
Once the cake has cooled completely, prepare Buttercream Frosting.
In a large bowl, with mixer at low speed, combine confectioner’s sugar, butter, milk and vanilla. Beat with an electric mixer at medium speed for 1-2 minutes, or until fluffy and creamy.
1 lb. box of confectioner's sugar, ½ cup butter, 3-4 tablespoons milk, 1 tsp. vanilla
If desired, add more milk until the frosting is a spreadable consistency.
Spread frosting on the cooled cake. Slice into small squares.