How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Baked Tomato Au Gratin?

You need 9 ingredients. The key ingredients include: 3 medium zucchini, sliced lengthwise, 5 small tomatoes, sliced, 4 slices Swiss cheese, 1/2 c. Parmesan cheese, and more.

Is Baked Tomato Au Gratin suitable as vegetarian?

Yes, Baked Tomato Au Gratin falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Baked Tomato Au Gratin?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Baked Tomato Au Gratin Recipe

Name: Baked Tomato Au Gratin
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 3 medium zucchini, sliced lengthwise; 5 small tomatoes, sliced; 4 slices Swiss cheese; 1/2 c. Parmesan cheese; 1 large onion, chopped; 1/2 c. Italian bread crumbs; 1/2 tsp. thyme; 1 tsp. minced garlic; salt and pepper to taste

Try this homemade Baked Tomato Au Gratin recipe the whole family will love. Made with zucchini, tomatoes, Swiss cheese and Parmesan cheese. Easy step-by…

This Baked Tomato Au Gratin relies on simple, everyday ingredients such as small tomatoes, sliced, swiss cheese, parmesan cheese and large onion, chopped. It comes together quickly and makes 4 servings, at about 286 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Vegetarian

Servings: persons

3 medium zucchini, sliced lengthwise
5 small tomatoes, sliced
4 slices Swiss cheese
1/2 c. Parmesan cheese
1 large onion, chopped
1/2 c. Italian bread crumbs
1/2 tsp. thyme
1 tsp. minced garlic
salt and pepper to taste

Frequently Asked Questions

Quick Info

Servings
4 servings
Calories
286 kcal
Category
Vegetarian

Eats Now Editorial Team

Recipe developed & tested in-house

Passionate cooks who develop and test new recipes every day – from quick weeknight dinners to special occasion feasts.

Reviewed by the Eats Now Kitchen Team

More about our team →

Baked Tomato Au Gratin

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions