Stuffed Summer Squash Boats with Beef, Shiitake Mushrooms & Swiss Cheese

INGREDIENTS

large Summer squash ((yellow squash and/or zucchini))

1 tsp

Olive oil

1/2

large Sweet onion ((chopped))

4 oz

Shiitake mushrooms ((chopped))

4 cloves

Garlic ((minced))

1 lb

Ground beef

3/4 tsp

Sea salt ((plus additional for sprinkling the squash in step 3))

1/2 tsp

Black pepper

2 tbsp

Sour cream

3/4 cup

Swiss cheese ((shredded, divided in two parts))