Golden Topped Cheesy Potato, Onion, and Turnip Casserole

This delicious recipe shared by Brookfield Farm makes a great Thanksgiving side dish or main course for your vegetarian guests.

3 Tbsp. butter
1 Tbsp. olive oil
2 large onions, thinly sliced
2 large baking potatoes (~1 lb.), thinly sliced
2 medium turnips, thinly sliced
salt and pepper to taste
1 1/2 Tbsp. finely chopped fresh marjoram
1 1/2 cups grated Swiss cheese
2 Tbsp Parmesan cheese
1 1/2 cups milk
1/4 cup bread crumbs
1/3 cup chopped parsley
Preheat oven to 375. Grease an 8×11″ shallow baking dish. Melt 1 Tbsp. butter and olive oil together in a large skillet. Saute onions slowly over low heat until golden brown, about 15 min.In the baking dish, make an even layer using half the potatoes and turnips, seasoning with salt and pepper and a little of the marjoram. Layer with half the onions and half the cheeses. Dot with 1 Tbsp. of the butter. Make a second layer with the remaining ingredients in the same order. Pour milk over gently; top with bread crumbs and parsley. Bake covered for 45 min. Uncover and bake 15-20 minutes, until vegetables are tender and top is golden. Serves 6-8.