Begin by placing a large pan or griddle over medium heat. Allow it to warm for about 2–3 minutes.

On a clean surface, take two slices of your sturdy bread and spread 1 tablespoon of cranberry jam on each slice.

On one slice of each jam-covered piece of bread, layer ½ of the sliced brie evenly, followed by ½ of the prosciutto.

Top each assembled slice with another jam-spread slice of bread, forming two complete sandwiches.

Use a butter knife to slather each side of the sandwiches with 1 tablespoon of softened unsalted butter.

Carefully place the sandwiches in the heated pan, allowing them to grill for about 3–4 minutes on one side.

After about 3 more minutes of grilling, check the second side for a golden brown color and the melty texture of the brie.

Once perfectly grilled, transfer your sandwiches to a clean plate, cut in half and serve immediately.