Hearty Italian Sausage Lasagna Soup

Ingredients

• 1 pound Italian sausage (mild or spicy, according to preference)
• 1 tablespoon olive oil
• 1 large onion, chopped
• 4 cloves garlic, minced
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1/2 teaspoon red pepper flakes (optional, for spice)
• 1/4 teaspoon black pepper
• 2 tablespoons tomato paste
• 4 cups chicken broth
• 1 can (28 ounces) crushed tomatoes
• 8 lasagna noodles, broken into pieces
• 1/2 cup heavy cream
• 1/2 cup grated Parmesan cheese
• 2 cups fresh spinach leaves
• Salt to taste
• Fresh basil leaves, chopped, for garnish