Roasted Apples with Spiced Bread Crumbs

Name: Roasted Apples with Spiced Bread Crumbs
Ingredients: 8 Tbs. (1 stick) (4 oz./125 g) unsalted butter, at room temperature, cut into small pieces, plus more for greasing; 3 cups (6 oz./185 g) coarse fresh bread crumbs; 1/2 cup (4 oz./125 g) granulated sugar; 1/2 cup (3 1/2 oz./105 g) firmly packed light brown sugar; 1/2 tsp. ground cinnamon; 1/2 tsp. freshly grated nutmeg; 4 firm, tart apples, peeled, halved, cored and very thinly sliced (about 1 1/2 lb./750 g); Heavy cream, at room temperature, for serving (optional)