Instructions from https://www.cooks.com/recipe/by8ge3ws/carousel-cookies.html
1 cup shortening
1/2 c sugar
1 egg, separated
1 teaspoon vanilla
1/4 teaspoon salt
2 cups flour
1 cup chopped nuts
jam
Preheat oven to 375°.
Beat butter and sugar until light and fluffy. Blend in egg yolk, vanilla, and salt. Add flour; mix well. Beat egg white until frothy. Shape level measuring tablespoons of dough into balls. Dip balls into egg white. Roll in nuts. Place on ungreased cookie sheet; flatten slightly. Indent centers; fill with preserves. Bake 10 to 12 minutes until lightly brown.