Courgette, tomato and Parmesan gratin recipe

Name: Courgette, tomato and Parmesan gratin
Yield: Serves 4
Ingredients: ½ tbsp olive oil; 1 small onion, finely chopped; 2 garlic cloves, crushed; 1 dried bay leaf; 2 x 400g tins chopped tomatoes; 10g fresh basil, leaves finely chopped, plus extra to serve; 2 large courgettes, trimmed and sliced lengthways into 1cm-thick slices; 1 large egg, lightly beaten; 70g plain flour; 150g grated mozzarella; 50g panko breadcrumbs; 30g Parmesan, finely grated; green salad, to serve (optional)

Breaded courgette is the star of the show in this fantastic gratin, with a taste of Italy coming from the rich tomato sauce and sharp Parmesan cheese. Get an extra-light and crispy topping using panko breadcrumbs, an ingredient you won't think twice about using next time! Serve with a green salad and some freshly torn basil for some extra colour and veggies.

See method

Serves 4
10 mins to prepare and 55 mins to cook and 10 mins to cool
372 calories / serving

Shop your ingredients

Tesco Olive Oil 250Ml
½ tbsp olive oil
£3.10
£12.40/litre
Tesco Brown Onions Loose
1 small onion, finely chopped
£0.11
£0.95/kg
Tesco Garlic 4 Pack
Aldi Price Match
2 garlic cloves, crushed
£0.87
£0.22/each
Tesco Bay Leaves
1 dried bay leaf
£0.80
£0.08/each
Grower's Harvest Chopped Tomatoes 400G
Aldi Price Match
2 x 400g tins chopped tomatoes
£0.43
£1.08/kg
Tesco Fresh Cut Basil 30G
Aldi Price Match
10g fresh basil, leaves finely chopped, plus extra to serve
£0.50
£16.67/kg
Tesco Courgettes Loose
Aldi Price Match
2 large courgettes, trimmed and sliced lengthways into 1cm-thick slices
£0.56
£2.78/kg
Big & Fresh Barn Eggs Large 10 Pack
1 large egg, lightly beaten
£2.80
£0.28/each
Stockwell & Co. Plain Flour 1.5Kg
Aldi Price Match
70g plain flour
£0.70
£0.47/kg
Tesco Grated Mozzarella 250G
Any 2 for £4.50 Clubcard Price - Selected Sliced And Grated Cheese
Offer valid for delivery from 30/09/2026 until 28/02/2027
150g grated mozzarella
£2.50
£10.00/kg
Blue Dragon Panko Breadcrumbs 120G
Everyday Low Price
50g panko breadcrumbs
£1.90
£15.83/kg
Creamfields Grated Grana Padano 100G
30g Parmesan, finely grated
£1.65
£16.50/kg
Tesco Babyleaf Salad 90G
green salad, to serve (optional)
£0.90
£10.00/kg

Method

Heat the oil in a saucepan set over a medium-high heat and fry the onion for 7-8 mins until soft. Add the garlic and bay leaf and cook for 1 min. Tip in the tomatoes and simmer over a low heat for 25 mins. Season well, remove the bay leaf and stir in the basil.
Preheat the oven to gas 6, 200°C, fan 180°C. Put the egg in a shallow bowl and the four on a plate, then lightly dip each side of the courgette slices in the egg followed by the flour. Arrange half the courgette slices in a layer on the bottom of a 15 x 25cm baking dish, then scatter over half the mozzarella and pour over half the tomato sauce. Repeat the layers once more to use all the ingredients, then scatter over the breadcrumbs and Parmesan. Bake for 35 mins until lightly golden on top and bubbling at the edges. Leave to rest for 10 mins. Serve with extra basil leaves and a green salad, if you like.