Slow Cooker Tortellini Minestrone Soup

Name: Slow Cooker Tortellini Minestrone Soup
Ingredients: 1 large white onion diced; 2 large carrots diced; 1 large celery stalk diced; 1 1/2 cups fresh green beans cut into three pieces; 2 cups diced pumpkin or butternut squash (optional - swap for potatoes if desired); 6 cloves garlic chopped OR minced; 1/4 cup tomato paste; 32 ounces diced or crushed fire roasted tomatoes; 6 cups low sodium vegetable stock (or broth); salt and pepper to taste; 2 tablespoons Italian dried herbs; 1 teaspoon dried basil; 2 teaspoons crushed bouillon cube (or stock powder); 3 tablespoons chopped fresh parsley; 1 teaspoon sugar (optional -- offsets the acidity from the tomatoes); 2 bay leaves; 1 parmesan rind; 2 large zucchini diced; 15 oz (425 g) white navy beans (Cannellini beans) drained and rinsed; 15 oz (425 g) red kidney beans drained and rinsed; 12 oz (340 g) three cheese tortellini (fresh or dried); 2 cups loosely packed baby spinach