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Roasted vegetable and mozzarella frittata sandwich

A vegetable frittata tucked into bread with melted mozzarella.

By The foodose editorial team. Nutrition calculated from USDA FoodData Central. Checked on paper on 12 September 2026; not yet cooked in a test kitchen or photographed, so the times and yield are estimates. How we develop our recipes
What still needs a real kitchen
  • Confirm the frittata sets in 15 to 18 minutes
  • Photograph the finished sandwiches
Time
About 55 min
estimated
Serves
2
see below
Energy
400 kcal
per serving
Protein
26 g
per serving
Jump to recipe
Not yet photographed. The panel names the dish’s main ingredients rather than showing a picture we have not taken.

Ingredients for 2 servings

2 servings

Check off ingredients as you go.

Contains eggs, gluten, milk. Check the labels on packaged ingredients:

  • mozzarella. Some mozzarella is made with animal rennet; check the label if you are vegetarian.
  • wholemeal bread. Bread often contains soya and can contain milk, egg or sesame; check the label.

Cooking steps

  1. Heat the oven to 200°C / 400°F (180°C fan). Toss the courgette and red pepper with the oil in a small ovenproof pan and roast for 20 minutes, until soft. Tip away any liquid that has collected.

  2. Turn the oven down to 180°C / 350°F (160°C fan).

  3. Beat the eggs, pour them over the vegetables in the pan and dot the mozzarella over the top.

  4. Bake for 15 to 18 minutes, until set in the centre with no liquid egg left.

    Cooked when: 71°C / 160°F in the centre. A food thermometer is the reliable way to tell.

  5. Cut the frittata in half, put each piece between two slices of bread with the basil and press gently.

The useful detail

Drain oily or watery roasted vegetables before adding eggs. Liquid in the pan stops the custard setting and leaves a wet layer under the frittata.

Make it work for you

One serving is Half the frittata in a sandwich. You can switch to a smaller portion in the ingredients above; it is three quarters of this, and it contains correspondingly less energy and protein. It is an option, not a goal.

  • Aubergine instead of courgette

    Silkier, and it takes up more of the oil.

    Per serving: about 5 kcal more, about the same protein, about the same fat.

  • Cheddar instead of mozzarella

    Sharper, and it browns rather than stretching.

    Per serving: about 35 kcal more, about the same protein, about 4 g more fat.

  • Eat the frittata without bread

    A lighter lunch. The figures below include the bread, which is most of the carbohydrate.

Estimated nutrition

Per standard serving, calculated from the ingredients above. Nutrition changes with substitutions, brands and how much oil stays in the pan.

A frittata sandwich counted in full, bread included. Eggs and mozzarella together give it a solid protein figure for a vegetarian lunch.

Nutrition per serving
Energy400 kcal
Protein26 g
Fat17 g
of which saturates6 g
Carbohydrate35 g
of which sugars7 g
Fibre6 g
Sodium600 mg
Show calculation notes

Each ingredient’s weight is multiplied by its USDA FoodData Central values per 100 g. The whole recipe is added up and divided by 2. Raw weights are used for meat, fish and vegetables; beans and lentils are drained weights. All of the oil is counted as eaten. Added salt is not included; sodium from stock, bread, cheese and tinned food is.

Calculation, whole recipe
IngredientWeight usedSourceEnergyProtein
courgette100 gFDC 169291Squash, summer, zucchini, includes skin, raw17 kcal1.2 g
red pepper80 gFDC 170108Peppers, sweet, red, raw21 kcal0.8 g
olive oil4.5 gFDC 171413Oil, olive, salad or cooking40 kcal0.0 g
eggs170 gFDC 171287Egg, whole, raw, fresh240 kcal21.1 g
mozzarella50 gFDC 170847Cheese, mozzarella, part skim milk127 kcal12.1 g
wholemeal bread140 gFDC 172688Bread, whole-wheat, commercially prepared353 kcal17.4 g
fresh basil5 gFDC 172232Basil, fresh1 kcal0.2 g
Whole recipeDivided by 2799 kcal52.8 g

Per serving the energy is rounded to the nearest 5 kcal, grams to the nearest whole gram and sodium to the nearest 10 mg. Calculation method 1.0, September 2026. How the calculation works.

Storage and reheating

In the fridge
Cool, cover and refrigerate within 2 hours of cooking. Eat within 3 to 4 days. The frittata is good cold; make the sandwich fresh.
In the freezer
Freezing keeps food safe indefinitely; the texture is best if it is eaten sooner rather than later.
Reheating
Reheat until it reaches 74°C / 165°F, steaming hot throughout.

Checked against US Food and Drug Administration, Refrigerator and Freezer Storage Chart, USDA Food Safety and Inspection Service, Leftovers and Food Safety, FoodSafety.gov, Safe Minimum Internal Temperatures and FoodSafety.gov, Cold Food Storage Chart. UK guidance from the Food Standards Agency is shorter, at two days for most leftovers.

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