This is the dough that I use with my cookie press...
1 c. margarine or butter, softened
1 c. vegetable oil
1 c. sugar
1 c. sifted confectioner's sugar
1 tsp. vanilla
4 1/2 c. flour
1 tsp. baking soda
1 tsp. salt
1 tsp. cream of tartar
Heat oven to 350. Combine butter, oil, and sugars; beat well on medium speed. Add eggs, one at a time, beating after each addition. Stir in vanilla. Combine flour, baking soda, salt and cream of tartar; add to creamed mixture. Put into cookie press. Bake 8-10 minutes until set and *slightly* brown around edges.