Sandwiches Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. 
Serving Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Tomato and Mozzarella Sandwich
A simple, refreshing cold sandwich highlighting fresh ingredients.
Contains common allergens
In the app, Listahan checks these against your household automatically.
Good to know
- Ready in under 30 minutes
Matched from this dish's own ingredients and timing. Browse more: 30-minute meals
Instructions
6 steps- 1
Slice the focaccia square in half horizontally.
- 2
Generously spread 1 tbsp of the fresh basil pesto on the bottom half, and 1 tbsp on the top half of the bread.
- 3
Arrange the thick slices of fresh mozzarella evenly over the bottom piece of focaccia.
- 4
Layer the thick heirloom tomato slices over the cheese.
- 5
Season the tomatoes heavily with coarse sea salt and cracked black pepper to bring out their natural juices. Drizzle lightly with extra-virgin olive oil.
- 6
Place the top piece of focaccia over the tomatoes, press down gently, and cut the sandwich in half to serve.
Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Listahan Family Score™
76/100
Good fit for most families
Score reflects how well this recipe fits a typical busy household. In the app, your Family Score is personalized to your household's allergens, kids, and pantry.
Nutrition
per serving140
Calories
7 g
Protein
5 g
Carbs
10 g
Fat
Estimated per serving. Actual values depend on the brands and portions you use.
Listahan cooking guide
Chef notes & practical guide
Technique notes, ingredient swaps, serve-alongside ideas, storage guidance, and equipment for this recipe.
Cultural context
This sandwich is the caprese salad in handheld form, drawing on the southern Italian tradition of pairing ripe tomato, fresh mozzarella, and basil that originated on the island of Capri. Built on focaccia with pesto standing in for whole basil leaves, it is a summer ideal where the quality of a peak-season tomato matters more than any technique.
Listahan note
This version leans on a real seasoning step rather than just stacking: salting the thick tomato slices heavily right before closing the sandwich draws out their juices so they soak into the pesto and bread instead of pooling and making it soggy later.
Technique cues
- Salting the tomatoes heavily at the last moment pulls out their juices on purpose so they flavor the focaccia rather than waiting and weeping into a soggy build.
- Pesto on both cut faces of the focaccia creates an oil barrier that slows the bread from absorbing tomato water too fast.
- Thick-cut fresh mozzarella laid under the tomato gives a substantial, milky layer that thin slices would lose against the juicy fruit.
Kitchen flow
- Parallel prep
- Slice the focaccia and spread the pesto while the mozzarella drains on a paper towel.
- Make-ahead
- Spread the pesto on the bread ahead, but slice, salt, and add the tomato only at the last minute so it does not weep.
- Leftover move
- Turn leftover tomato, mozzarella, and pesto into a quick caprese salad rather than a soggy next-day sandwich.
- Cleanup rhythm
- Only a board and knife to wash since nothing is cooked.
Ingredient brief
Role, handling, and swap guidance for each key ingredient.
ripe heirloom tomato
Star ingredient
Purpose: A peak-season heirloom is the whole point; its sweetness and acidity carry the sandwich.
Handling: Slice it thick and salt it just before assembly to draw out flavor.
Adaptation: Vine-ripened or beefsteak tomatoes work when heirlooms are out of season.
fresh mozzarella cheese
Creamy layer
Purpose: Milky fresh mozzarella is the cooling, soft counterpoint to the acidic tomato.
Handling: Slice thick and pat dry so excess whey does not water down the build.
Adaptation: Fresh burrata is even creamier but messier; sliced provolone is firmer and milder.
basil pesto
Herb sauce and barrier
Purpose: Pesto delivers the basil note of a caprese and oils the bread against the tomato juice.
Handling: Spread it on both cut faces of the focaccia.
Adaptation: Whole torn basil leaves plus a drizzle of olive oil give a fresher, less garlicky version.
focaccia bread
Vessel
Purpose: The oily, herbed crumb of focaccia complements the Italian flavors and holds up to the juices.
Handling: Cut a square in half horizontally so it stays sturdy.
Adaptation: Ciabatta is a sturdier, less oily alternative with a chewier crumb.
extra-virgin olive oil
Finishing fat
Purpose: A drizzle of good olive oil ties the tomato, cheese, and pesto together.
Handling: Drizzle lightly over the salted tomatoes just before closing.
Adaptation: A few drops of aged balsamic instead add sweet acidity over the oil.
Technique notes
- Pat the fresh mozzarella dry before it goes on; surface whey is the fastest way to a soggy sandwich.
- Salt the tomatoes at the very end, not early, so the released juices flavor the build instead of pooling out.
- Use the best olive oil and pesto you have, since with no cooking the raw ingredient quality is the whole flavor.
Ingredient swaps
- Dairy-free direction
- Use a plant-based fresh mozzarella and check that the pesto is made without parmesan; the texture is close, the milky tang slightly off.
- Gluten-free direction
- Build it on toasted gluten-free ciabatta; it eats a little drier so add an extra drizzle of oil.
- Lower-sodium direction
- Salt the tomatoes lightly and use a low-salt pesto, leaning on the tomato's natural sweetness instead.
Serve alongside
- Marinated white beans
- Olive tapenade
- Simple green salad
- Roasted peppers
- Chilled pinot grigio
- Sparkling water with basil
- Iced herbal tea
Serving suggestions only — check pairings for your household's allergens.
Storage & reheating
- Eat the same day; once salted, the tomatoes make this sandwich soggy within a few hours.
- There is no good reheat; serve it at room temperature for the best flavor.
- Components keep separately a couple of days in the fridge but should not be frozen.
Equipment
- Serrated bread knife
- Cutting board
- Paper towels for draining cheese
- Pastry brush for oil
Make this household-aware
Listahan Pro checks this recipe against your household's allergens, finds pantry-aware swaps, builds the shopping list, and helps you plan the week around it.
Plan it in Listahan
Add Tomato and Mozzarella Sandwich to your week, check it against your household's allergens, and build the shopping list automatically.
More Sandwiches recipes
Sandwiches Lens Verified Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Falafel Wrap
A vegetarian favorite with crispy falafel balls and tahini sauce in a wrap.
Sandwiches Lens Verified Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Banh Mi
A Vietnamese classic with savory meat, pickled vegetables, and fresh herbs in a baguette.
Sandwiches Lens Verified Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Roast Pork Italian Sandwich
Philadelphia's beloved roll piled with garlicky slow-roasted pork, sharp provolone, and garlicky sauteed broccoli rabe.