In a Dutch oven, cook meat thoroughly, drain and set aside.

Wipe out oven and steam onion, broccoli and mushrooms over medium coals for 10 minutes.

Remove vegetables and set aside.

Dry out oven with paper towel then rub sides and bottom with oiled paper towel.

In separate container beat eggs, milk, salt, pepper and butter.

Fold in meat, vegetables and cheese. Pour into
oven and bake.

Cook the top and bottom for 14 minutes.

Remove oven from heat and continue baking from the top only, 20 more minutes or until eggs are set.