Make-Ahead Thanksgiving Side Dishes (To Free Up Your Oven)
If you've only got one oven, Thanksgiving Day can turn into a game of Tetris, a turkey that needs hours, sides that need heat, and not enough room for both. These Make-Ahead Thanksgiving Side Dishes are here to help, some can be baked early and reheated, others skip the oven entirely, so you're never stuck waiting on space.
This is exactly the kind of planning I lean on every year to keep the day feeling manageable instead of chaotic. You can read more about how I map out my full cooking schedule here. But the short version for oven space specifically: some sides can be fully baked ahead and just reheated, some never need the oven at all, and knowing which is which makes a bigger difference than people expect.
Jump to:
- Make-Ahead Sides to Save Oven Space
- Green Bean Casserole
- Brussels SproutS Casserole
- Baked White Cheddar Mac and Cheese
- Old Fashioned Turkey Dressing
- Broccoli Cauliflower Casserole
- More Thanksgiving Recipes
- Side Dishes That Don't Use the Oven
- Whole Berry Cranberry Sauce
- Slow Cooker Mac and Cheese VelveetA
- Idahoan Mashed Potatoes
- Instant Pot Mac and Cheese Velveeta
- Maple Brussels Sprouts
- More Side Dishes
Make-Ahead Sides to Save Oven Space
With one oven and a turkey that needs it most of the day, these are the sides worth baking early. Fully bake each of these first thing in the morning, then set them aside and give them a quick reheat once the turkey comes out and the oven is free again. It's the easiest way to get four sides on the table without a single one competing with your bird for oven time.
Green Bean Casserole
This Green Bean Casserole comes together in a creamy mushroom base topped with crispy onions, and it's built to handle a make-ahead holiday schedule.
You can fully assemble the casserole (minus the crispy onion topping) up to a day in advance. Cover and refrigerate, then let it sit at room temperature for about 30 minutes before baking so it heats evenly. For the best texture, add the crispy onion topping right before it goes in the oven rather than the day before, so it stays crunchy instead of going soft in the fridge. On the day of, bake as directed straight from the fridge (just add a few extra minutes to the covered bake time), then finish uncovered until golden and bubbly.
Brussels SproutS Casserole
This Brussels Sprout Casserole is rich and cheesy, baked with bacon, tender sprouts, and a crispy panko topping. It's an easy one to check off your list early.
Assemble the full casserole up to a day ahead, cover, and refrigerate. There's no need to hold off on the panko topping the way you would with other casseroles, since it crisps up fine straight from the fridge. For the best flavor and texture, bake it fresh the day of rather than fully cooking and reheating, that's what keeps the panko topping crunchy instead of soggy. Straight from the fridge, plan on adding about 10-15 extra minutes to the bake time to make sure it heats through evenly.
Baked White Cheddar Mac and Cheese
This Baked Mac and Cheese is rich, creamy, and topped with golden panko breadcrumbs, made with a blend of white cheddar, mozzarella, and gruyere for real depth of flavor. It's a crowd-pleaser that also happens to be easy to get out of the way early.
Bake it first thing in the morning so it's fully done before the turkey needs the oven, then reheat it later, covered with foil at 350F, with a splash of milk stirred in to keep the sauce smooth. If you'd rather assemble ahead instead, you can do that too: build the full casserole, cover it, and refrigerate until you're ready to bake it fresh. Either way, once it's made, it'll hold in the fridge for 3-4 days, so there's real flexibility in when you tackle it.
Old Fashioned Turkey Dressing
Rich, buttery, and filled with savory flavor from onion, celery, and warm spices, this Old Fashioned Turkey Dressing feels right at home on every Thanksgiving table, with crisp edges, a soft, fluffy center, and layers of flavor in every bite.
This one's built for a make-ahead day. Assemble everything except the chicken stock up to a day in advance in the casserole dish, cover, and refrigerate. When you're ready to bake, add the stock, let it come to room temperature first, then bake as directed, covered for 40 minutes and uncovered for the last 10-15 minutes to crisp up the top. Leftovers keep in the fridge for up to 4 days; reheat in the oven at 350F with a splash of broth to keep it from drying out.
Broccoli Cauliflower Casserole
This Broccoli Cauliflower Casserole is creamy, cheesy, and topped with buttery crumbs that bake up golden and crisp, the kind of side that fits just as easily on a holiday table as it does on a random weeknight.
Bake this one fully ahead of time, first thing in the morning works great, then reheat it later once the turkey's out and the oven's free again. Cover with foil and warm at 350F until heated through, this keeps the top from over-browning while the center catches up. If you'd rather assemble instead of fully baking, that works too: combine everything except the crouton topping, refrigerate, then add the topping fresh and bake just before serving so it stays crisp instead of going soft.
More Thanksgiving Recipes
Side Dishes That Don't Use the Oven
These sides never needed the oven to begin with, so they're just as easy to make the morning of as they are a few days ahead. Whether you're using a slow cooker, Instant Pot, or the stovetop, these are the sides to lean on if you want a little more flexibility in how far ahead you plan.
Whole Berry Cranberry Sauce
Whole Berry Cranberry Sauce is one of the few Thanksgiving sides that's actually better made ahead. The citrus and cinnamon have time to fully meld into the cranberries, so the flavor is richer the longer it sits.
You can make this up to 10-14 days ahead in the fridge, or freeze it up to a month out if you want it off your list early. For best flavor, make it at least a day or two before serving rather than the morning of. To serve, just give it a quick stir straight from the fridge, no reheating needed, since it's traditionally served cold or at room temperature.
Slow Cooker Mac and Cheese VelveetA
This Slow Cooker Velveeta Mac and Cheese is rich, creamy, and full of cheesy goodness, made with Velveeta, sharp cheddar, and whole milk, and it practically makes itself. No boiling, no oven, just dump everything in and let the slow cooker do the work.
Since this cooks entirely in the slow cooker, it never competes with your oven or stovetop on the day, just start it about 2 hours before you want to serve and switch to warm once it's done, it'll hold well there for hours. One reader doubled the batch and froze the extra with no change to the texture after thawing and reheating, so if you want a true head start, this is one of the few mac and cheese versions on the site that freezes reliably ahead of time.
Idahoan Mashed Potatoes
These Idahoan Mashed Potatoes are rich, creamy, and packed with homemade comfort, made from boiled russet potatoes, real butter, and whipping cream. No boxed potatoes needed, and no oven either, this one's entirely stovetop.
You can make these fully ahead: once cooled, store in an airtight container in the fridge for 3-4 days, or freeze them if you want to knock this out even earlier. To reheat, warm them in a pot on the stove with a little extra butter, milk, or cream, stirring for 4-5 minutes until heated through, this brings back the creamy texture that can seize up in the fridge. The microwave works the same way in a heat-safe bowl if you'd rather skip the stovetop.
Instant Pot Mac and Cheese Velveeta
Rich, creamy, and ultra comforting, this Instant Pot Velveeta Mac and Cheese is a fast, foolproof way to get dinner on the table, with tender pasta, melty Velveeta, and no oven required at all.
Since this cooks start to finish in the Instant Pot, it's one of the easiest sides to make same-day without touching your oven or stovetop, the whole thing comes together in about 15 minutes. This one's genuinely best made fresh rather than ahead, the sauce thickens as it sits and the noodles absorb some of that creamy texture, so it won't reheat quite as smooth. If you do have leftovers, they'll keep in the fridge for a few days, just stir in a splash of milk while reheating to loosen the sauce back up.
Maple Brussels Sprouts
Our Maple Bacon Brussels Sprouts are tender on the inside, caramelized on the outside, and tossed with a drizzle of maple syrup for the perfect balance of savory and sweet, all made in one skillet on the stovetop.
This one comes together entirely in a skillet, no oven, no waiting for space. For the best texture, these are honestly better made fresh, the crispy bacon and caramelized edges are part of the appeal, and that crispness fades if made too far ahead. What you can do in advance is the prep: chop the bacon and trim the sprouts a day ahead and store them separately in the fridge, so it's a fast toss-together on the day.
However you split up your list, the goal is the same: fewer things fighting for oven space, and more time actually enjoying the day instead of running between the kitchen and the table. Mix and match from both lists depending on your menu, bake a couple of these first thing in the morning, lean on the stovetop and slow cooker for the rest, and you'll free up way more room than you'd expect.
Looking for more ways to plan ahead this season? Check out How I Plan My Thanksgiving Cooking Schedule for the full breakdown of how I map out my entire day, timing, oven space and all.
