Brown sausages slowly on both sides in a small saute pan or grill pan.

Put a small amount of marinara in the bottom of a small saute pan or casserole dish. Layer sausages, peppers, onions, sauce and cheese. Sprinkle with celery salt and pepper flakes.

Cover and bake at 325° for approximately 40 minutes or until thermometer reaches 155°. Bake uncovered for last ten minutes. If sausages still aren't cooked and cheese is melted, cover and finish baking.

Serve on baguette

Variations; Parmesan, goat cheese, jalapeños, paprika, smoked paprika, sautéed peppers/onions, red onions, shallots, pizza sauce, green bell peppers, poblano, habanero, celery, giardenera, basil, oregano, Italian seasoning, balsamic, red wine celery, garlic, fennel,