French Onion Potatoes – Cheesy, Golden & Comforting! All the rich flavors of French onion soup baked into tender, cheesy potatoes. This side dish is hearty, flavorful, and perfect for any family dinner or holiday table. Ingredients: 4 cups thinly sliced potatoes (Yukon Gold or Russet) 2 large onions, thinly sliced 3 tbsp butter 1 tsp olive oil 2 cloves garlic, minced 1 tsp fresh thyme (or ½ tsp dried) Salt & pepper, to taste 1 cup shredded Gruyère or Swiss cheese ½ cup sour cream (optional) 2 tb