1/2 cup quick-cooking liquid
1/2 cup shortening
1 cup white sugar
3 eggs
1 teaspoon vanilla extract
1 1/2 cups all-purpose flour
1/2 teaspoon salt
1/2 teaspoon baking powder
1 teaspoon baking soda
1/4 cup unsalted butter
1/2 cup confectioners' sugar
1/3 cup peanut butter
2 cups confectioners' sugar
1/3 cup milk
1/3 cup water
1/4 cup lemon juice
Preheat oven to 350 degrees F (175 degrees C).
In a small mixing bowl, combine quick-cooking liquid, shortening, sugar, and eggs; beat until light and fluffy. Stir in vanilla, 1 1/2 cups flour, salt, and baking powder; mix well.
In a large bowl, stir together 1/2 cup flour, 1/2 cup salt, and 1/2 cup baking soda; mixture should be sticky. Stir in butter, 1/2 cup confectioners' sugar, and milk. Stir until well blended. Stir in lemon juice; spread on prepared baking sheets.
Bake 20 to 30 minutes in the preheated oven. Cool on baking sheets 10 minutes before glazing.