Skillet Mushroom Mac and Cheese

INGREDIENTS

8 oz

uncooked whole-wheat elbow pasta (such as Bionaturae)

1 tbsp

extra-virgin olive oil

pkg. cremini mushrooms, cut into quarters

4 oz

shiitake mushroom caps, cut into halves

5 tsp

chopped fresh thyme, divided

1/2 tsp

kosher salt

2 tbsp

all-purpose flour

1 1/2 cups

2% reduced-fat milk

2 oz

Gruyère cheese, shredded (about 1/2 cup)

2 oz

low-moisture part-skim mozzarella cheese, shredded and divided (about 1/2 cup)

3 cups

baby spinach

2 tbsp

whole-wheat panko (Japanese breadcrumbs)