Heat the oil in a medium saucepan over medium heat. Add the onion and jalapeÃÂ±o, stirring for 5-6 minutes, until the onion is softened but not brown. Add the garlic and cook, stirring, for 2 minutes. Add the cumin, coriander, and chile powder, and cook for 1 minute. Add the mushrooms, salt and tomato paste, and stir to combine.