Start by preparing your ingredients for the delicious holiday main courses that aren't turkey. If you’re using meats like beef chuck roast or pork butt, marinate them with olive oil, fresh herbs, and seasonings for at least 30 minutes. Meanwhile, chop vegetables like onions and carrots; for baked ziti, mix the three-cheese blend in a bowl. Gather all your equipment, including a slow cooker, large pot, or baking dish.

Heat a large skillet over medium-high heat and add a splash of olive oil. Once hot, sear the beef chuck roast or pork butt for about 5-7 minutes on each side until golden brown. This step intensifies the flavors of your holiday main course. Ensure each side is nicely caramelized before transferring the meat to your slow cooker or roasting dish to retain the savory juices.

In your slow cooker or baking dish, arrange the seared meat on the bottom and layer it with the chopped vegetables and any remaining marinade. For baked ziti, mix the uncooked pasta with the cheese filling, marinara sauce, and desired seasonings in a separate bowl, ensuring everything is well-combined before layering in your baking dish. This crucial step sets the stage for rich, delicious flavors.

Set your slow cooker to low heat and let it cook for 6-8 hours, or alternatively, preheat your oven to 325°F (163°C) for roasting. If roasting, cover your dish and bake for 3-4 hours until the meat is fork-tender and the internal temperature reaches at least 145°F (63°C). For baked ziti, add a sprinkle of cheese on top and bake uncovered for 25-30 minutes until bubbling and golden.

Once the meat is fully cooked and tender, take the time to beautifully assemble your holiday main course. If you're serving pork or beef, shred the meat and distribute it on a large serving platter alongside the cooked vegetables. For baked ziti, let it sit for a few minutes before slicing; this allows for the flavors to meld and prevents it from falling apart.

After cooking, allow the meats to rest for about 15-20 minutes before slicing them. This step is essential for juicy, tender slices as it allows the juices to redistribute evenly throughout the meat. Meanwhile, finish any last-minute preparations, like garnishing the dish with fresh herbs, making it visually appealing for your holiday gathering.

Finally, gather around the table and serve your delectable holiday main courses that aren't turkey. Present the dishes alongside your favorite sides, such as roasted vegetables or garlic mashed potatoes. The aroma will undoubtedly draw everyone to the table, inviting them to savor every comforting bite of your lovingly prepared meals.