Unsalted butter, softened; for greasing

3 cups dried apricots, chopped into ¼-inch pieces

1 (13-ounce) jar apricot preserves (1¼ cups)

2 cups all-purpose flour

1½ cups packed light brown sugar

1½ teaspoons ground cinnamon

¾ teaspoon salt

¾ teaspoon baking soda

¼ teaspoon ground cloves

2¼ cups old-fashioned rolled oats

1 cup chopped walnuts

1½ cups unsalted butter, melted

1 large egg, room temperature; beaten

1½ teaspoon pure vanilla extract