16 Vegetarian Thanksgiving Leftover Recipes Worth Making
The morning after Thanksgiving, the fridge tells the truth. Containers of mashed potatoes, half a pan of roasted vegetables, cranberry sauce in three different bowls, stuffing, rolls going slightly stale. It happens in nearly every kitchen, and most of it gets eaten cold, straight from the container, until everyone is sick of it.
There is a better way. A vegetarian Thanksgiving leaves behind some of the most versatile leftovers in all of cooking: roasted vegetables that become soup, mashed potatoes that turn into shepherd’s pie, cranberry sauce that works in breakfasts and desserts. These 16 collections from the Leafline archive are built around exactly that kind of second-day cooking — every one of them vegetarian-friendly, and every one a real way to use what you already have.
One practical note first, from the USDA’s leftover guidance: get leftovers into the fridge within two hours of serving, keep them refrigerated for no more than three to four days, and freeze anything you won’t eat by then (frozen leftovers keep their best quality for two to six months). Reheat everything to 165°F before serving.
1. 51 Healthy Soup Recipes — the roasted-vegetable rescue plan
Leftover roasted vegetables are one pot and thirty minutes away from becoming an entirely new meal. This is the biggest soup collection in the Leafline archive — 51 recipes ranging from roasted butternut squash and pumpkin soups to lentil, barley, and split pea — and it is the fastest route from a fridge full of sides to a week of lunches.
Simmer the vegetables in broth, blend half for body, and you have soup that tastes nothing like the day before. Two honest notes: this collection is mixed, so skip past the turkey soup, clam chowder, and sausage entries — the vegetable options are the large majority.
Browse all 51 healthy soup recipes
2. 21 Healthy Fall Soup Recipes — pumpkin, squash, and sweet potato leftovers
If your Thanksgiving table leaned into pumpkin, butternut squash, or sweet potatoes, this is the collection that turns the remainder into something warm. Creamy pumpkin soup, roasted carrot and apple soup, roasted sweet potato cinnamon soup — all natural destinations for half-used cans of pumpkin puree and leftover roasted squash.
Like the collection above, a few meat-based soups are mixed in (turkey meatballs, sausage, chicken, clam chowder), so stick to the vegetable ones for a fully vegetarian spread.
Browse all 21 fall soup recipes
3. 15 Healthy Vegan Sandwich Recipes — the day-after sandwich, upgraded
The post-Thanksgiving sandwich is a tradition, and the vegetarian version might be the best one: stuffing, cranberry sauce, roasted vegetables, and mashed potatoes piled between good bread. This collection is fully vegan — 15 sandwiches including smashed white bean and artichoke filling, roasted eggplant with mozzarella, curried cauliflower chickpea wraps, and rainbow vegetable tortilla wraps.
Use it as inspiration rather than a strict formula: swap the fillings for whatever survived the holiday, keep the cranberry sauce as your condiment, and lunch is done for days.
Browse all 15 vegan sandwich recipes
4. 15 Kid-Friendly Vegetarian Recipes — leftovers the kids will actually eat
By Friday, the kids are done with reheated sides. This collection is built for that exact moment: 15 vegetarian recipes designed for younger eaters, including instant pot pumpkin mac and cheese (a perfect use for leftover pumpkin), creamy tomato soup, vegan oat flour pancakes, and crispy tofu nuggets.
Everything here is vegetarian, and the flavors are familiar enough that leftover vegetables can slip in without a negotiation at the table.
Browse all 15 kid-friendly vegetarian recipes
5. 16 Healthy Casserole Recipes — the everything-in-one-dish solution
A casserole is the most forgiving format in holiday cooking: leftover stuffing becomes the topping, mashed potatoes become the base, roasted vegetables fill the middle. This 16-recipe collection covers breakfast and dinner casseroles, with vegetarian standouts like the breakfast casserole, Mexican quinoa casserole, squash casserole, broccoli casserole, and cheesy eggplant casserole.
Honest note: several entries use chicken, tuna, chorizo, beef, or bacon — read the titles and pick the vegetarian ones, which are clearly labeled.
Browse all 16 healthy casserole recipes
6. 15 Healthy Comfort Food Recipes — shepherd’s pie and chili from the fridge
Some leftovers want to become comfort food. Mashed potatoes are one layer of a shepherd’s pie away from dinner; leftover roasted sweet potatoes belong in the spicy sweet potato soup; cauliflower chickpea curry and crockpot vegetarian chili soak up whatever vegetables are left.
This is another mixed collection — skip the chicken tortilla soup, short ribs, and chicken chili entries and stay with the vegetarian ones, which make up most of the list.
Browse all 15 healthy comfort food recipes
7. 15 Sautéed Vegetable Recipes — give tired vegetables a second life
Day-three roasted vegetables can taste, frankly, tired. Ten minutes in a hot skillet with garlic, lemon, or balsamic fixes that completely. This collection of 15 sautéed vegetable recipes — garlicky broccoli with lemon, balsamic Brussels sprouts, buttery sautéed mushrooms, green beans with apple cider — is designed for exactly this refresh.
Reheat leftovers as a sauté instead of in the microwave and they taste cooked, not reheated. Most of these are ready in under 30 minutes and every one is vegetarian or vegan.
Browse all 15 sautéed vegetable recipes
8. 15 Cauliflower Recipes — for the whole roasted head nobody finished
Whole roasted cauliflower looks magnificent on the table and almost never gets finished. This collection puts the remainder to work: cauliflower scampi in lemon garlic sauce, cauliflower rice tabbouleh, roasted cauliflower with tahini, cauliflower fritters for breakfast, and cauliflower and sweet potato breakfast muffins.
One honest flag: two entries aren’t vegetarian (a chicken burrito bowl and a beef shepherd’s pie) — the rest of the collection is meatless.
Browse all 15 cauliflower recipes
9. 15 Delicious Carrot Recipes — roasted carrots, round two
Roasted carrots are a Thanksgiving staple and a leftover certainty. Beyond reheating them, this collection offers glazed carrots, carrot casserole, whole roasted rainbow carrots, vegan carrot ginger soup, carrot cake oatmeal smoothies, and candied carrots that work as a topping for muffins and cakes.
Two entries use chicken (a coconut curry soup and a Korean salad) — everything else is vegetarian, and the soups and bakes are the best leftover moves.
10. 15 Amazing Fall Salads — the fresh counterweight
After two days of rich food, a big salad is what the body actually wants. Leftover roasted squash, Brussels sprouts, apples, and cranberries are ready-made salad components — toss them over greens with a maple-Dijon vinaigrette and the leftovers become the freshest meal of the weekend.
This collection leans heavily on apple-cranberry-quinoa combinations that match Thanksgiving leftovers well. A couple of entries include bacon; skip those two and the rest is vegetarian.
11. 20 Best Healthy Breakfast — sweet potato hash and cranberry mornings
Thanksgiving leftovers make genuinely good breakfasts. Leftover sweet potatoes become the Southwest sweet potato hash in this collection; leftover cranberry sauce goes into the cranberry orange smoothie bowl; pumpkin puree works in the pancakes and overnight oats. All 20 recipes here are vegetarian, from gingerbread overnight oats to mushroom spinach frittata.
This is also the collection to browse when you want the weekend to feel normal again — real breakfasts, not reheated dinner.
Browse all 20 healthy breakfast recipes
12. 15 Tasty Fall Bread Recipes — stale rolls and leftover cranberries
Dinner rolls go stale fast, and this collection has the two best answers: cinnamon apple pie bread pudding, which is specifically built for leftover bread, and banana cranberry bread, which uses up the cranberry sauce sitting in your fridge. Pumpkin pecan bread and pumpkin cheesecake bread handle any remaining pumpkin puree.
All 15 are vegetarian, and bread pudding in particular is one of the highest-value leftover transformations there is — stale bread plus custard plus an oven.
Browse all 15 fall bread recipes
13. 15 Delicious Fall Dessert Recipes — pumpkin and cranberry, continued
Half a can of pumpkin puree and a bowl of cranberry sauce are dessert waiting to happen. This collection includes pumpkin bread with cranberries and walnuts, pumpkin fudge brownies, healthy pumpkin bars, vegan apple crisp, and butternut squash brownies — every one vegetarian, and most of them happy to absorb whatever the holiday left behind.
Bake once and the weekend has a sweet ending that doesn’t taste like leftovers at all.
Browse all 15 fall dessert recipes
14. 15 Two-Ingredient Desserts — when you’re done cooking
By the weekend, elaborate baking is off the table. These 15 desserts each need only two ingredients: cookie butter fudge, coconut macaroons, chocolate protein mousse, peanut butter chocolate fudge, frozen yogurt granola cups. If you have chocolate and one other thing, you have dessert.
All vegetarian, all minimal effort — this is the collection for the cook who has earned a break.
Browse all 15 two-ingredient desserts
15. 15 Quick and Easy Microwave Mug Cakes — dessert for one, in minutes
Sometimes you want dessert without making a dessert for twelve people. These 15 single-serving mug cakes — chocolate chip, snickerdoodle, apple-cinnamon, peanut butter, strawberries and cream — are mixed in a mug and microwaved in minutes. Leftover cranberry sauce makes an excellent topping for any of them.
All vegetarian, and the fastest route from craving to cake on this entire list.
Browse all 15 microwave mug cake recipes
16. 5 Vegetarian Fall Dessert Recipes — the organized five
If the collections above feel like too much choice, this is the shortcut: five focused dessert collections from the Leafline archive, each from a different angle — the essential fall desserts, special-diet options, a cookie lover’s lineup, no-bake recipes for when the oven is occupied, and 25 easy treats for a crowd. Together they hold nearly a hundred vegetarian-friendly desserts.
Start here when you want someone else to have done the organizing, then pick the one collection that matches your leftovers.
Browse all 5 fall dessert collections
Leftover storage tips that actually matter
- Cool it fast. Get leftovers into shallow containers and into the fridge within two hours of serving — this is the single most important food-safety step.
- Label with the day. A strip of tape with “Friday” on it ends the guessing game on Monday.
- Freeze in portions. Soups, casseroles, and mashed potatoes all freeze well for two to six months; freeze in meal-sized portions so you only thaw what you’ll eat.
- Reheat to 165°F. Soups and casseroles should be steaming throughout; a food thermometer removes the doubt.
- Re-crisp, don’t microwave. Roasted vegetables, stuffing, and potatoes come back to life in a hot oven or skillet; the microwave makes them soggy.
Vegetarian Thanksgiving leftover FAQs
How long do vegetarian Thanksgiving leftovers last?
The same as any Thanksgiving leftovers: three to four days in the refrigerator, per USDA guidance. Freeze anything you won’t eat within that window.
What are the best vegetarian Thanksgiving leftovers to keep?
Roasted vegetables, mashed potatoes, stuffing, sweet potatoes, cranberry sauce, and bread keep the best and are the most versatile. Salads with dressing already on them and anything with fresh dairy are the first to go.
What can I make with leftover cranberry sauce?
More than you’d think: smoothie bowls and oatmeal at breakfast, sandwich spread at lunch, and baked into banana cranberry bread or spooned over mug cakes for dessert.
What can I make with leftover mashed potatoes?
Shepherd’s pie (top with the mash), potato soup, breakfast hash, or folded into a casserole. Mashed potatoes also freeze well in portions.
Can you freeze Thanksgiving leftovers?
Yes — freeze within the three-to-four-day refrigerator window. Soups, casseroles, mashed potatoes, breads, and most desserts freeze well for two to six months at best quality.
How do I reheat leftovers safely?
Reheat to an internal temperature of 165°F, measured in a few spots. Only reheat what you’ll eat; repeated cooling and reheating is where food safety goes wrong.
More Thanksgiving inspiration
Planning next year’s table, or still deciding this year’s menu? These recent Leafline roundups cover the holiday from every angle:
- 14 Vegetarian Thanksgiving Sides Worth Making — the supporting cast that becomes next week’s leftovers
- 10 Vegetarian Thanksgiving Main Dishes Worth the Table — the centerpiece, meat-free
- 8 Vegetarian Thanksgiving Appetizers — for while guests arrive
- 10 Vegetarian Thanksgiving Desserts — the sweet finish
Happy cooking — and happy second-day cooking, which is honestly the best part.
Leave a Comment