Ingredients

1medium ciabatta roll (an oval-shaped, dome-topped roll)
or whole-wheat English muffin
2tablespoons mild-flavored fresh goat cheese
2tablespoons nonfat milk
2tablespoons finely chopped mixed fresh herbs, such as basil, fennel fronds, and oregano
Salt and pepper to taste
Freshly squeezed juice of 1/2 lemon
1handful arugula (about 2 ounces)
1medium portobello mushroom cap, cleaned and sliced into 1/8-inch pieces
2teaspoons olive oil