This is such a simple recipe, but always gets rave reviews. It's great for company or for just you!
Source: Mary Beth W.
1 large russet potato, peeled and cubed
1 large sweet potato, peeled and cubed
1 c. diced onion
1/2 t. salt
1/4 t. pepper
2 T. butter
2 T. olive oil
Melt butter and olive oil in 9x13" pan. Toss with potatoes, onion, salt and pepper. Bake at 375 degrees for 25-30 minutes.