Potato and Sausage Casserole Recipe

Ingredients

• 1 1/2 pounds russet potatoes (about 3 medium sized potatoes), peeled and cut into 1-inch chunks
• 1 teaspoon extra virgin olive oil
• 8 oz fresh spinach, washed, dried, and stemmed
• 1/2 pound Italian sausage (we like 1/2 sweet and 1/2 hot Italian sausage), out of casing, broken into small pieces
• 1 large red onion (about 3/4 lb), peeled and sliced thin
• 1 small clove garlic, minced
• 1 1/2 tablespoons unsalted butter, plus extra to grease the baking dish
• 1/3 cup heavy cream
• 1 tablespoon cider vinegar
• Dash nutmeg
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• 1 cup shredded Gruyere or Swiss cheese