Watching your figure? This gluten free and vegetarian recipe has 118 calories, 9g of protein, and 2g of fat per serving. This recipe covers 8% of your daily requirements of vitamins and minerals. This recipe serves 6. Head to the store and pick up ground nutmeg, salt, eggs, and a few other things to make it today. From preparation to the plate, this recipe takes roughly 45 minutes.
Combine all ingredients except cooking spray in a large bowl. Spoon onion mixture into 6 (6-ounce) custard cups coated with cooking spray.
Place the custard cups in a 13 x 9-inch baking pan; add hot water to pan to a depth of 1 inch.
Bake at 325 for 1 hour or until a knife inserted in center comes out clean.