Begin by slicing the focaccia bread lengthwise to create two equal halves, exposing the soft interior.

Take the softened butter and generously apply it to both cut sides of the focaccia.

In a small bowl, combine the grated or crushed garlic with mayonnaise to create a flavorful aioli. Spread this mixture evenly onto both halves of the focaccia.

On the bottom half of the focaccia, layer fresh basil leaves, followed by the Genoa salami, smoked turkey, and ham. Then add slices of roasted red bell peppers and a generous layer of provolone cheese.

Carefully place the top half of the focaccia back on top of the layered ingredients to create a complete sandwich.

Tightly wrap the assembled sandwich in plastic wrap to secure all the delightful ingredients within. Place it on a baking sheet, weigh it down with a heavy object like a cast iron skillet, and refrigerate for at least 4 hours or overnight.

Once sufficiently pressed, unwrap the sandwich and use a serrated knife to carefully slice it into portions.