Cheesy Asparagus Soup

Ingredients (12)

• + 6 cups chicken stock, divided add to pantry
• + 1 ½ pounds asparagus, trimmed and chopped add to pantry
• + ¼ cup butter add to pantry
• + 2 tablespoons olive oil add to pantry
• + 1 onion, chopped add to pantry
• + 2 ribs celery, chopped add to pantry
• + 2 cloves garlic, chopped add to pantry
• + 6 tablespoons all-purpose flour add to pantry
• + 1 cup half-and-half, or more to taste add to pantry
• ✓ 1 pound processed American cheese (such as Velveeta®), cubed
• + salt and ground black pepper to taste add to pantry
• + salt and ground black pepper to taste add to pantry