Achieving perfectly al dente ziti is crucial; undercook it slightly (as noted, 3 minutes less than package directions) to prevent mushiness during the final bake. While frozen meatballs are convenient, browning them thoroughly in the skillet before adding sauce develops superior flavor and texture. For an elevated marinara, consider sautéing a finely minced fresh garlic clove and a pinch of red pepper flakes before adding the jarred sauce, or stir in a splash of dry red wine to deepen its complexity. Ensure the ricotta is fully incorporated into the sauce for a creamy, consistent mouthfeel throughout the layers. The final uncovered baking step is essential for that coveted golden-brown, bubbly cheese crust.