Make-ahead: Assemble up to 1 day ahead, cover, and refrigerate; add 5–10 minutes to bake time if cold. Storage: Refrigerate leftovers in an airtight container up to 4 days. Reheat slices in the oven or air fryer for crisp edges. Tips: Don’t overcook the pasta; it finishes in the oven. Fresh basil added at the end keeps the flavor bright.