Best Ham & Potato Casserole Recipe - How To Make Ham & Potato Casserole

Ingredients

• 3 tbsp. butter, plus more for pan
• 1 small yellow onion, finely chopped
• 3 tbsp. all-purpose flour
• 1 tsp. sweet paprika
• 1 1/2 c. whole milk
• 2 c. diced cooked ham
• Kosher salt
• Freshly ground black pepper
• 2 1/2 lb. russet potatoes, peeled and sliced into 1/4"-thick rounds
• 3 c. shredded cheddar
• Freshly chopped chives, for serving