Slow Cooker Tomato Basil Parmesan Soup

INGREDIENTS

1/4 cup

Basil, fresh

1/2

Bay leaf

1 cup

Carrots

1 cup

Celery

1 cup

Onions

1 tsp

Oregano, dried

2 14 ounce cans

Tomatoes, with juice

4 cups

Chicken broth

Optional cooked orzo pasta

1/4 tsp

Black pepper

1/2 cup

Flour

1 tsp

Salt

1/2 cup

Butter

2 cups

Half and half

1 cup

Parmesan cheese, grated