Heat the oil in a deep saucepan. Add the onion and fry until translucent, then add the garlic and fry until light golden brown. Add the cumin seeds and fry until they begin to pop and release their aroma, about 30 seconds.
Mix in the calabaza, squash, or pumpkin and brown sugar and sauté for 1 to 2 minutes. Cover the pot, lower the heat to medium-low, and cook for