"Roasted sweet potatoes are chunkily mashed with a mix of melted butter, bourbon, and orange zest for loads of flavor without being too boozy-tasting. Then they’re rebaked in a casserole dish with a crunchy pecan-and-brown-sugar streusel to add some crunch. Game plan: Though the streusel is crunchiest when freshly made, this casserole can be completely made ahead, covered, and refrigerated for up to 2 days. Reheat uncovered in a 350°F oven until heated through, about 35 to 45 minutes...."