Heat butter in a small pan, add the onion and cook for 3 minutes.
Heat butter and 1 tablespoon olive oil in a skillet.
Heat butter in a large, heavy skillet until it turns amber.
Heat butter and two tablespoons of the olive oil in a large skillet.
Heat butter in a pan, and fry mushrooms for about 10 minutes, then season to taste.
Heat butter in a heavy skillet and add cauliflower pieces.
Heat butter and oil in a large skillet over medium heat.
Heat butter in large skillet and saute crabs, starting with the top side down, for two minutes.
Heat butter and oil in a large sturdy saucepan.
Heat butter in 2-quart saucepan over medium heat until golden brown.