How to Make It
Combine cheese and butter in bowl of a food processor; pulse until smooth. (Goat cheese butter may be covered and set aside at room temperature until ready to assemble sandwiches, up to 2 hours.)
Cut baguette in half lengthwise; spread 1 cut side with goat cheese butter, and top with a layer of prosciutto. Spread second cut side with jam, and place on top of other half. Cut baguette into even pieces, and serve.