1. Cut the onion into small cubes. Peel the tomatoes and cut into small cubes.
2. Put 5g of butter in a pan, melt the oil and fry the onion until it changes color. Then take 5g of butter and fry the tomatoes until the sauce has a texture.
3. Spread the remaining butter on the inner wall of the small cup and cover with onions. Spread the tomato sauce on top of the onions.
4. Take a deep baking pan, pour hot water, put the small cup in the hot water, and add an egg to each.
5. Select the normal mode of the oven, preheat to 180 degrees, put it in the middle layer, and bake for 10 minutes. After removing, sprinkle an appropriate amount of chopped parsley.
