Broccoli Cheddar Frittata

Serves ~70 (with side and salad) --3 long pans

25 medium potatos, sliced and roasted with oil, salt and pepper

7 dozen eggs
9 cups milk
couple tsp. salt
pepper
parsley

15 sauteed onions
salt
garlic
little bit of red pepper flakes
Italian herbs (just a bit)

4 bunches broccoli, steamed
5 pounds cheddar, shredded

350f convection COVERED for 45 mins; uncovered for 15-30 minutes more