Clean, peel and devein shrimps. Reserving the shells (if you have them) put them in a cup and fill with water to be used as broth when cooking.
Put olive oil in a braiser or skillet over medium heat. When the oil shimmers, add garlic and onions. Cook until transparent without burning the garlic. Then add chopped tomato and cook for another 2 minutes.
Add the shrimps and cook until pink. Strain the shells from the reserved liquid, and add the liquid into the pan.
Add the squash with the mixture, lower the heat and cover to simmer for about 8-10 minutes.
Add salt & pepper to taste. Enjoy!
Notes
For meat variation: Ground pork, chicken, or ground beef would be great.
For Opo variation: You can substitute any type of squash or vegetables.
For a completely vegan recipe: Omit the shrimp!
When cutting vegetables, be sure to cut them all the same size so they cook quickly and evenly.