The phrase "greased pan" means coating a cooking pan with a thin layer of oil or fat to prevent food from sticking to it while cooking. Full definition
Line a standard cupcake pan with twelve paper baking cups, or grease the pan with butter if not using baking cups. (epicurious.com)
Fold cranberries into batter until mixed, place batter into grease pan. (savynaturalista.com)
I like to use mine to grease the pan before cooking, season roasted vegetables, make quick and easy garlic bread, and as a simple sauce for rice or pasta. (wellnesting.com)