Preheat oven to 375 degrees F and grease a 8x10 inch casserole dish
Add sliced zucchini to bottom of dish and top with cottage cheese
Mix egg whites, eggs, Worcestershire sauce, basil, salt and pepper to dish
Use a fork to mix everything around
Scatter grape tomatoes over top and sprinkle on cheese, if using
Bake for 35 minutes or until top is golden brown on edges and eggs are set