Kathy Finholt's Crusting Cream Cheese Icing

Not my recipe, but I copy paste to my blog because it will be easier for me when I want to use this recipe.

1 cup butter
1/2 cup Crisco
16 oz. cream cheese
3 lbs powdered sugar
1 T vanilla
1/2 tsp salt

Kathy says:

Mix on low speed for a couple of minutes.
This makes a fairly stiff icing if you use 3-1/2 lb. Powdered sugar. For a softer one you can use 3 lbs. of powdered sugar. Can stay out of fridge for several days. Freezes well.