2 tablespoons olive oil
1 tablespoon unsalted butter
2 large sweet onions, thinly sliced (about 2 cups)
1/4 cup water
1/2 cup mushrooms, chopped
1/8 teaspoon sugar
Earth Balance Extra Virgin Olive Oil Buttery Spread (optional)
nonstick cooking spray
1 baguette, sliced 1/4 inch thick
Fresh basil leaves