Preheat oven to 180 degrees.
Defrost spinach in the microwave. Heat butter and milk in a small pot. Chop spinach and add. Remove from heat. Stir and season with salt, pepper and garlic.
Combine flour, baking powder and baking soda in a large bowl. Add Parmesan cheese, egg and spinach mixture. Gently stir in goat cheese by teaspoonfuls.
Fill ramekins with batter. Prick cherry tomatoes several times and place 1 tomato in center of each muffin.
Bake for 15 minutes until golden brown.
Preparation Tip:
If you want to serve the muffins warm, add the goat cheese first in the ramekins to get a goat cheese center that melts in your mouth.