Preheat oven to 450 degrees Fahrenheit and line a baking sheet with Gefen Parchment Paper.

Add the sweet potatoes, eggplants, and zucchini to the baking sheet. Add the oil and toss to coat, then spread out in a single layer. Roast for 20–30 minutes, until somewhat crispy on the outside and tender on the inside.

In a bowl, toss the lettuce with the onions, roasted vegetables, and avocado dressing. Not an avocado fan? Use the mayonnaise recipe to create a delicious mayo-based dressing instead. Onions: If you prefer crispy fried onions instead of sharp fresh ones, roast or sauté the onions along with the other vegetables.