saute onions in olive oil
add mushrooms and cook down
add all veggies, carrots, potatoes, celery
move veggies to a bowl
in the same pan while still warm
add butter and flour and cook for 1 minute
add broth and milk and let it come to a boi
and thicken.
add veggies and peas
Spray a casserole dish with pam
scoop veggie mixture into the casserole dish
To make topping:
Combine mashed potatoes with 1 egg
spread over veggie mixture in casserole dish
combine bread crumbs and parmesan cheese
and sprinkle over mashed potatoes
cook at 375 for 30 - 40 minutes