Rinse mushrooms in water, using a sieve, and drain into a paper towel.
Slice Mushrooms.
Pour oil into a saucepan and place over high heat. When the oil is very hot, add mushroom, onions and salt, it should sizzle.
Fry until they are browned about 5 minutes.
Add garlic, ginger, thyme and seasoning cubes. Fry until it smells aromatic.
Add tomato, scotch bonnet and green bell pepper.
Cover and cook until tender, 10-15 minutes.
Add the knob of butter and stir. Take off the heat.
Serve with fried, grilled or boiled potato cubes, yam, plantains, rice sweet potatoes, toast, fried egg etc.