This is used instead of cooking sprays for baking pans. It works very well, at a fraction of the cost of cooking sprays or professional Baker's Release sprays. It also doesn't gum up on the pan edges like the sprays.
1/2 cup shortening
1/2 cup vegetable oil
1/2 cup all purpose flour
1. Mix ingredients either by hand or with a mixer until everything is well incorporated.
2. Store in an airtight container at room temperature for up to 6 months.