1-First Step: Split the focaccia Start with 1 piece of focaccia bread that is about 3 inches by 4 inches. Carefully split it in half lengthwise so you have a top and bottom layer. If the bread is very soft, use a serrated knife and gentle sawing motions so it stays neat instead of squishing flat. This shape makes the Italian focaccia sandwich easier to hold and gives you room for all the fillings.

2-Second Step: Spread the pesto Take 2 tablespoons basil pesto, preferably homemade, and spread it across both cut sides of the bread. Make sure each slice gets a nice coating so every bite has that bright basil flavor. Pesto also acts like glue, helping the sandwich hold together once the fillings are stacked. If you want a lighter version, you can use a thin layer on one side only, but the classic easy Italian focaccia sandwich tastes best when both sides are covered.

3-Third Step: Add the meats Layer on 2 slices mortadella and 2 to 3 slices salami. You can place them in any order, but folding or loosely ruffling the slices helps create more texture and makes the sandwich look fuller. Mortadella brings a soft, buttery savoriness, while salami adds a little punch. If you prefer, use ham instead of mortadella for a milder flavor that still keeps the sandwich hearty. This is where the homemade focaccia sandwich starts to feel like a deli treat.

4-Fourth Step: Add cheese and vegetables Next, add 25 grams sliced fresh mozzarella, 1 roasted pepper from a jar, and 1 handful arugula, also called rocket in some regions. The mozzarella adds creaminess, the roasted pepper brings sweetness, and the arugula gives a peppery lift that keeps the sandwich from feeling too rich. If you do not have roasted peppers, artichokes work beautifully and give the sandwich a tangy edge. You can also tuck the greens in last so they stay perky and fresh.

5-Final Step: Close, cut, and serve Place the top half of the focaccia over the fillings and press gently so the sandwich holds together. Slice it in half if you want two smaller portions, or leave it whole for a more rustic look. Serve right away for the best texture, since focaccia tastes amazing when the bread is soft, the pesto is fragrant, and the fillings are still fresh. Total time is just 10 minutes, with a prep time of 10 minutes, which makes this sandwich recipe one of the easiest lunches you can keep in your pocket.