For the Grilled Cheese Sandwich:

1. Heat a skillet over medium heat.
2. Spread softened butter on one side of each slice of bread.
3. Place one slice, buttered side down, in the skillet.
4. Add 2 slices of cheese, then top with the second slice of bread (buttered side up).
5. Cook for 3-4 minutes on each side, until the bread is golden and the cheese is melted.
6. Repeat for the second sandwich. Slice in half and serve hot.

For the Tomato Soup:

1. Heat olive oil in a pot over medium heat. Add diced onion and minced garlic, sautéing until softened.
2. Add chopped fresh tomatoes (or canned tomatoes) to the pot. Cook for 10 minutes until the tomatoes break down.
3. Add broth, salt, and pepper. Simmer for another 10 minutes.
4. Blend the mixture until smooth using an immersion blender or regular blender.
5. Stir in heavy cream if desired, and adjust seasoning with sugar, salt, or pepper.
6. Serve hot with fresh basil leaves as garnish.