2/3 cup butter, softened
1 cup packed light brown sugar
1 teaspoon vanilla extract
3 cups all-purpose flour
1 tablespoon baking powder
1 teaspoon baking soda
2 eggs, beaten
1 (8 ounce) can evaporated milk
1 cup vegetable oil
1 cup peanut butter
1 (6 ounce) can lemon-lime flavored carbonated beverage
2 tablespoons lemon juice
1 cup packed light brown sugar
1 cup applesauce
2 teaspoons vanilla extract
1/2 teaspoon lemon zest
Preheat the oven to 350 degrees F (175 degrees C). Sift together the flour, baking powder, baking soda, and eggs. Cut in the flour mixture until the mixture resembles coarse crumbs. Set aside to let dough rise 1 hour, or longer if possible. In a medium bowl, combine evaporated milk, peanut butter, lemon-lime soda, brown sugar, applesauce, lemon liqueur, lemon zest and brown sugar mixture. Mix well. Roll dough into 1 inch balls and pinch to flatten. Place 1 cup or so of mixture under each cookie; roll mixture tightly enough to avoid sticking to cookie. Place on ungreased cookie sheet.
Bake for 8 to 10 minutes in the preheated oven. Allow cookies to cool on baking sheet for 5 minutes before removing to wire racks to cool completely.