Caramelized Onion Lasagna
Make Ahead Tip: Cover and refrigerate the caramelized onion filling (Step 2) for up to 1 day.
Kitchen Tip: Onions contain a volatile compound called lachrymator that reacts with the fluid in your eyes and makes them water. To chop them without crying, try wearing goggles, burning a candle nearby or cutting them under cold water. To mellow the bite of a raw onion, soak it for an hour in 1 cup cold water, 1/4 cup vinegar and 1/2 teaspoon salt and then rinse thoroughly.
Kitchen Tip: The dark gills found on the underside of a portobello mushroom cap are edible, but can turn a dish an unappealing gray/black color. Remove the gills with a spoon, if desired.
2 1/2 starch, 2 vegetable, 1 medium fat meat, 2 fat