Slow Cooker Vegetable Minestrone Soup

INGREDIENTS

2 cups

onion (diced (about 1 large onion))

3/4 cup

celery (diced (about 2 celery stalks))

1 cup

carrots (cut into coins (about 4 carrots))

2 cups

zucchini (diced (about 1 large zucchini))

1 cup

green beans (cut into 1 inch pieces)

15 oz

garbanzo beans (canned, drained)

2 cups

lentils

28 oz

diced tomatoes (canned)

8 cups

vegetable broth

1 tsp

ground black pepper

1 tsp

salt

1 tsp

dried oregano

2 cups

spinach

1/4 cup

fresh parsley (for serving)