Butter a 9" x 14" baking dish. Layer the bread with ricotta, crab, Jack and cheddar cheese and chiles. Blend eggs, milk, butter and mustard in a large pouring bowl. Pour over bread mixture, covering all of it. Cover the Strata with plastic wrap and refrigerate overnight. Bake at 350 degrees for 30 minutes or until eggs are set. This is from the Pacific Grove Inn (Bed & Breakfast accommodations), Pacific Grove, CA.