JAM INGREDIENTS 2 tablespoons unsalted butter 2 tablespoons extra-virgin olive oil 2 large sweet yellow onions, each about 12 ounces, thinly sliced 1/2 teaspoon kosher salt 1/2 cup balsamic vinegar (not aged) 1/2 cup packed light brown sugar 1/4 cup dried currants or raisins CROSTINI INGREDIENTS 1 baguette, cut into 25 slices, each about 1/2 … Read More