Baking: Line an 8 inch Pyrex or pan with parchment paper. (Parchment paper is a life-saver when it comes to clean up.) Grilling: Just use aluminum foil to wrap your peaches.
Slice peaches and place in a large bowl.
Sprinkle peaches with lemon juice and cinnamon.
Stir until peaches are coated.
Baking: Place peaches in dish and cover loosely with aluminum foil. Grilling: Securely wrap peaches in aluminum foil.
Bake at 425 degress for 30 minutes OR grill on medium for 30 minutes.