Step #2 Place potatoes, tomatoes & zucchini in alternate layers in an ovenproof dish.
Step #3 Spice up each layer with salt, pepper & garlic.
Step #4 Drizzle half of the olive oil over the top layers of zucchinis, sprinkle it over breadcrumbs & drizzle remaining olive oil over the top of that.
Step #5 Bake for 40 mins in oven.
Enjoy the Gratin of Zucchini, Tomatoes & Potatoes recipe