I found this recipe on Taste of Home. It was appealing to me because it was simple, used ingredients that were always on hand and made an amount sufficient to share.

1 cup butter, softened
1 cup vegetable oil
1 cup sugar
1 cup confectioner’s sugar
2 large eggs, room temperature
1 teaspoon vanilla extract
4 1/2 cups all-purpose flour
1 teaspoon baking soda
1 teaspoon cream of tartar

In a large bowl, beat the butter, oil and sugars. Beat in the eggs until well blended. Beat in vanilla. Combine the flour, baking soda and cream of tartar; gradually add to the creamed mixture.
Drop by small teaspoonfuls on to ungreased baking sheets. Bake at 375 degrees until lightly browned, about 8-10 minutes. Remove to wire racks to cool.