Pork Tenderloin With Fruit with seasoning

1 tablespoon butter 1 small onion , finely chopped 1 tablespoon flour 1 cup chicken stock 2 tablespoons Dijon mustard 2 tablespoons pure maple syrup 1[...]

salt 1 lb pappardelle pasta or 1 lb fettuccine 2 pork tenderloin, trimmed (1 1/2-1 3/4 lb, total wt.) black pepper 1/2 cup all-purpose flour 2 tablespoons[...]