Wash the tomatoes and dab them dry. Cut off the lid and hollow out the tomatoes with a teaspoon. Drain upside down on kitchen paper. De-stem mushrooms and cut stems into cubes. Heat oil in a pan and sauté mushroom stems for about 3 minutes.
Season with salt and pepper. Let them cool down. Clean and wash the spring onion. Cut into diagonal, thin slices. Stir goat's cheese, cream cheese and milk until smooth. Stir in 3/4 of the spring onion, seasoning mixture and diced mushrooms and season with salt and pepper. Put the cheese mixture into a piping bag without a spout, fill tomatoes and mushrooms with it. Put mushrooms on the grill for 8-12 minutes, tomatoes for 2-3 minutes. Arrange filled mushrooms and tomatoes on a plate.
Stir goat's cheese, cream cheese and milk until smooth. Stir in 3/4 of the spring onion, seasoning mixture and diced mushrooms and season with salt and pepper. Put the cheese mixture into a piping bag without a spout, fill tomatoes and mushrooms with it. Put mushrooms on the grill for 8-12 minutes, tomatoes for 2-3 minutes. Arrange filled mushrooms and tomatoes on a plate. Sprinkle with the rest of spring onion and coarse pepper and decorate with herbs as desired