Melt butter in a deep ... saute onion and shallot over medium heat until onions ... are fork-tender. Transfer soup mixture to a food processor ... medium hot. Serves 6.
Finely chop 1/2 the mushrooms. Slice remaining 1/2. Saute shallots in 1/4 cup butter until ... cup for thicker soup). Stir with a wooden ... and pepper. Serves 6-8.