Courgette And Tomato Gratin Recipe

courgette and tomato gratin

What is courgette and tomato gratin?

This courgette and tomato gratin recipe is a healthier take on a famous French dish. Gratin typically is made with scalloped potatoes and here in the UK we may be more familiar with the term “dauphinoise potatoes” which is a potato gratin specifically from the Dauphine region of southern France and possibly the oldest recipe. There are many variations of gratin now and this one features sliced courgette and tomato in place of potato for a lower calorie alternative to scalloped potatoes.

Do you have a diet restriction?

This recipe is great if you have one of the following diet restrictions:

  • Vegetarian
  • Nut Free
  • Syn Free (HeA and HeB used)
  • Ultra Processed Food Free

Ultra processed food free recipes are recipes that use ingredients where no additives have been used. This will include ingredients that can be made at home to be UPF free such as stock cubes, sauces and seasonings.

Step 1: Slice courgette and tomato

To start with, thinly slice two whole courgettes and 8 salad tomatoes for the courgette and tomato gratin. Depending on the oven proof dish you use the amount of slices you use may differ slightly. My dish was approximately 22cm x 15cm and I had, leftover, around 1/3 of a courgette and most of the end slices of tomato.

Step 2: Arrange your gratin

Line up alternate slices of courgette and tomato until your dish is full. There’s no real specific way to layer your gratin, you could either do it in rows like i have or you could lay them down and layer them up vertically if you prefer.

courgette and tomato gratin

Step 3: Breadcrumb topping

Season well with 1/4 tsp salt and 1 tsp of basil (or a few shredded fresh leaves) and top with 25g of grated low fat cheddar. In a small bowl mix together 1 tbsp of bread crumbs with 1 tsp of parmesan and sprinkle over the courgette and tomato gratin. Bake for 25-30 minutes in an oven pre heated to 200°c.

courgette and tomato gratin

Can I reheat or freeze this recipe?

You can reheat this dish, preferably by warming in a hot oven for approximately 10 minutes however this recipe does not freeze well.

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courgette and tomato gratin

Courgette And Tomato Gratin

This courgette and tomato gratin is a healthy alternative to dauphinoise potatoes. Promotes healthy weight loss.
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Course Lunch, Main Course, Side Dish
Cuisine British, French
Servings 4
Calories 50 kcal


  • 2 courgettes zucchini
  • 6 salad tomatoes
  • ¼ tsp salt
  • 1 tsp dried basil or several fresh leaves
  • 25 g low fat cheddar
  • 1 tbsp breadcrumbs
  • 1 tsp parmesan


  • Thinly slice the courgettes and tomatoes and line them up in an oven proof dish as shown in the photo.
  • Add salt and basil then cover with grated cheese
  • Mix together breadcrumbs and parmesan and sprinkle on top of the gratin
  • Bake in an oven preheated to 200c for 25-30 minutes.


Please check out the full blog post for detailed instructions and pictures for this recipe.

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