How do you cream a mixture as in a baking recipe?

I'll assume you mean creaming as it would be mentioned in a baking recipie. To cream together butter/margarine/shortening and sugar: place the amounts of sugar and butter as directed by the recipe into a bowl and Method 1- using the back of a wooden spoon sort of MASH and stir together the sugar and butter until it comes together into a cohesive mixture. Method 2- mix using a hand/ standing mixer on medium to medium high speed until everything is incorporated. Proceed with the recipie as directed.