Healthy Skillet Tuna Casserole

INGREDIENTS

8 oz

whole wheat pasta (I used fusilli)

10 oz

fresh English peas

1 tbsp

extra-virgin olive oil

medium onion (finely chopped)

8 oz

mushrooms (chopped)

3 tbsp

butter

4 tbsp

all purpose flour

2 cups

milk

1 tsp

kosher salt

2 5 ounce cans

solid white albacore tuna in water, drained

1 1/2 cups

finely grated pecorino romano cheese (divided)