Italian Holiday Soup

Ingredients

• 1 tablespoon olive oil
• 1 pound Italian sausage, casings removed
• 3 cloves garlic, minced
• 1 medium sweet onion, diced
• 2 teaspoons Italian seasoning
• kosher salt, to taste
• freshly ground black pepper, to taste
• 2 tablespoons all-purpose flour
• 4 cups chicken stock
• 1 (8-ounce) can tomato sauce
• 1 (9-ounce) package refrigerated three cheese tortellini
• 1/2 bunch kale, stems removed and leaves chopped
• 1/3 cup heavy cream
• 3 tablespoons fresh basil, chopped