1. Melt butter in a large saucepan. Add garlic and onion. Cook gently 3 to 4 min until fragrant and tender.

2. Sprinkle with flour. Cook 3 to 4 min longer; don't brown.

3. Whisk in milk and bring to a boil. Add tomatoes, tomato paste, herbs, salt and pepper. Cook 5 min. Taste and adjust seasoning, if necessary.

4. Meanwhile, cook tortellini in a large pot of boiling, salted water for 5 min. Add broccoli and continue to cook for 3 min longer. Drain well.

5. Combine drained tortellini mixture with sauce. Add marble or Cheddar cheese. Transfer to a 3 qt (3 L) baking dish. Sprinkle with grated Parmesan.

6. Bake in preheated oven at 350 F (180 C) for 30 min or until hot and lightly browned.