Chipotle peppers are smoked jalapeño chiles, available dry or canned in adobo sauce. For a mild casserole without the distinctive smoky flavor of these chiles, simply omit them.
To reduce the fat in each serving of this recipe by about 10 grams, use light garlic and herb cheese spread in place of the regular spread.
Freeze remaining chipotle chiles in small, recipe-sized quantities. Place the chiles in ice cube trays until they are frozen solid, then transfer them to a resealable plastic freezer bag.