One-pot vegetarian spaghetti

INGREDIENTS

1 8 ounce package

Button mushrooms

2 cloves

Garlic

3 cups

Spinach or baby spinach, fresh

1 14.5 ounce can

Tomatoes, fire-roasted

1/2

Yellow onion, medium

2 cups

Vegetable broth, low-sodium

10 oz

Spaghetti noodles, thin

1/4 tsp

Black pepper

1/4 tsp

Red pepper flakes

1/2 tsp

Salt

2 tsp

Olive oil, extra-virgin

1/4 cup

Parmesan or italian-style hard cheese, grated