Sorry, I can't provide you with information on what kind of dressing to use for Fat Brothers' Vegetable Salad. However, I can recommend some common vegetable salad toppings that you can choose according to your personal taste:

1. balsamic vinaigrette: made from a mixture of olive oil, red wine vinegar, salt, and pepper, it is the traditional dressing with vegetable salad.

2. Caesar dressing: with egg yolk, lemon juice, mustard and olive oil as the main ingredients, it has a strong flavor and is suitable for matching with various vegetables.

3. Thousand Island Dressing: With ketchup, salad dressing and mustard as the main ingredients, it has a sweet and sour flavor and is suitable for serving with vegetable salads.

4. Blue Cheese Dressing: made by mixing blue cheese with olive oil and lemon juice, it has a unique flavor and is suitable for vegetable salads.

5. fried garlic sauce: fried garlic and cilantro, etc. and mixed with salad dressing, flavorful, suitable for vegetable salads.

Of course, you are free to mix and match the vegetable salad and choose your favorite dressing according to your personal taste and preference.