Creamy Potato & Hamburger Soup

Ingredients

• 1 pound ground beef
• 1 medium onion, chopped
• 3 cloves garlic, minced
• 4 cups beef broth
• 4 large potatoes, peeled and diced
• 2 carrots, peeled and diced
• 2 celery stalks, diced
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 1/2 teaspoon dried thyme
• 1/2 teaspoon dried rosemary
• 2 cups milk
• 1 cup heavy cream
• 2 tablespoons all-purpose flour
• 1 cup shredded cheddar cheese
• 2 tablespoons butter
• 2 green onions, sliced for garnish