Step 1: Peel four sweet potatoes.
Step 2: Place two wooden spoons or two chopsticks on each side of potato and cut 1/8-inch thick slices.
Step 3: Place sliced sweet potatoes in baking dish or cast iron skillet.
Step 4: Fill in the spaces between the sweet potatoes with the baby gold potatoes.
Step 5: Combine melted butter and seasoning and brush over potatoes.
Step 6: Bake potatoes in 425° oven for 1 hour, basting with butter in bottom of pan every 10-15 minutes. Sprinkle with cheeses and bake additional 5-10 minutes or until cheese is melted.
Step 7: Remove from oven and sprinkle with flake salt and rosemary, if desired. Cool slightly before serving.