Step 1) To make Italian Vinaigrette: Combine oil, lemon juice, vinegar, garlic, sugar, mustard, basil, Beau Monde seasoning, dill, salt and pepper in a jar with a tight-fitting lid; cover and shake well.
Step 2) Mix cauliflower, zucchini, broccoli, bell pepper, carrots and red onion in a large bowl. Toss with Italian Vinaigrette.
Step 3) Cover and refrigerate several hours or overnight, stirring occasionally.
Step 4) To serve, drain vegetables, reserving dressing. Arrange lettuce leaves on large platter; top with vegetables and drizzle with dressing. OR use reserved dressing in a tossed salad.