Heat pan and pour olive or cooking oil.
Sauté onion for a minute then follow garlic.
Add patis (fish sauce) and gata (coconut milk). Bring to a boil.
Pour-in ground black pepper, and then cook for 10 minutes in medium heat until the liquid reduces.
Put-in the crabs and stir. Cook for 10 minutes.
Add the squash (kalabasa) and chili peppers. Cook until the squash becomes a little tender.
May add sitaw (string beans) too at this point.
Transfer to a serving plate.
Serve with rice.