Delicate white bread triangles layered with prosciutto cotto and cheese are an Italian café staple. A high protein mediterranean snack that's light enough for a 1500 calorie plan.
Trim all crusts from the white sandwich bread slices to create soft edges.
Spread a thin, even layer of butter on one side of each bread slice, ensuring full coverage for moisture control.
On the unbuttered side of four slices, spread a thin layer of mayonnaise, then layer evenly with provolone cheese and prosciutto cotto.
Top each layered slice with the remaining bread, buttered side facing out, then gently press the sandwiches to compact.
Using a sharp knife, cut each sandwich diagonally into two neat triangles, wiping the blade between cuts for clean edges. Serve immediately or cover with a damp towel to keep fresh.