While the garlic, mushrooms and wine are cooking on the stove, you can bake the slices of cheese-topped bread. Less than 10 minutes later, top the crostini with the mushroom mixture.
Whether you use red or green grapes, tart goat cheese or buttery Brie, these snacks--each of which also include a walnut half--are among the easiest salty-sweet finger foods you can make.