Step 1

Peel and finely slice the sweet potatoes into very thin rounds.

Step 2

In a saucepan, sauté butter and garlic until fragrant. Whisk in the flour until combined.

Step 3

Add the Parmesan cheese, milk, cream and seasonings, bring to a soft boil. Remove from heat and allow the cream to cool. Once cooled, stir in the shredded cheese.

Step 4

In a casserole dish, arrange the potato slices in rows and pour cheese mixture over the sweet potato slices.

Step 5

Cover with foil and bake at 400°F for 30-35 minutes. Remove foil and bake an additional 8-10 minutes. Serve warm.