Creamy spaghetti squash with ricotta and spinach

INGREDIENTS

3 1/2 lb

spaghetti squash

1 tsp

extra virgin olive oil

1 small

onions

2 cups

grape tomatoes

2 large cloves

garlic cloves

6 cups

baby spinach

15 ozs

part-skim ricotta cheese

1/2 cups

part-skim mozzarella cheese

3 Tbsps

parmesan cheese

1/4 cups

basil

1 tsp

table salt

1/2 tsp

pepper