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Vegan Stuffed Acorn Squash with Lentils

Vegan Thanksgiving Recipes: Stuffed Acorn Squash

70 min total4 servingsServes 435 min prep35 min cookOccasion: FallMake ahead

When the Thanksgiving table needs a vegan centerpiece, stuffed acorn squash keeps the plan focused: roast the squash, simmer a savory lentil filling, and assemble. The finished halves bring color, texture, and a portioned main without asking you to manage a fussy pastry crust or several pans at once.

This recipe uses familiar supermarket ingredients and a simple maple mustard dressing to connect everything. Plan about 25 minutes of active work and a moderate-cost grocery run; then let the oven handle the rest. A platter of golden squash halves looks intentional with parsley and pecans.

Before you start

Hosting plan

Make ahead
Roast the squash and cook the lentil filling up to one day ahead, then refrigerate them separately. Rewarm covered squash at 350°F and heat the filling in a skillet before assembling.
On the day
Fill the rewarmed squash with the hot lentil mixture and press it into the cavities. Finish with extra parsley and pecans, then serve while the filling and squash are hot.
Serving order
Serve one stuffed squash half per person with cranberry sauce, green beans, and a crisp salad. For a buffet, place the platter near the end of the line, after sides; for a larger spread, each filled half can be cut in two and offered alongside other mains.

Why this works

  • Time: 10 active minutes; Cost: $. Roasted acorn squash is tender and individually portioned, so serving needs no carving. Its ridged shell keeps filling contained from platter to plate.
  • Time: 20 active minutes; Cost: $. Lentils give the filling a substantial base while celery, onion, and mushrooms create familiar stuffing-like savory notes. Cooking them in one skillet limits dishes and makes seasoning easy to adjust before filling.
  • Time: 5 minutes; Cost: $. Maple mustard adds sweet-tangy contrast, helping earthy lentils and squash taste connected without a separate sauce.

Ingredients

Ingredients for Vegan Stuffed Acorn Squash with Lentils
  • 2 medium acorn squash, halved and seeded (1360 g)
  • 2 tablespoons olive oil (27 g)
  • 1 teaspoon kosher salt and 1/2 teaspoon black pepper (7 g)
  • 1 cup diced yellow onion (150 g)
  • 1 cup chopped cremini mushrooms (70 g)
  • 1/2 cup diced celery (50 g)
  • 2 cloves garlic, minced (6 g)
  • 1 1/2 cups cooked brown lentils, drained (300 g)
  • 1/3 cup chopped pecans (38 g)
  • 2 tablespoons maple syrup and 1 tablespoon Dijon mustard (55 g)

Ingredient notes

  • Time: 5 minutes; Cost: $. Choose acorn squash that feels heavy for its size with firm, matte skin. Deep green, orange, or mixed-color varieties all work. Avoid soft spots near the stem or any split flesh.
  • Time: 2 minutes; Cost: $. Brown or green lentils keep their shape better than red lentils here. Use canned lentils only if drained well; their softer texture benefits from an extra minute of skillet cooking.
  • Time: 2 minutes; Cost: $. Cremini mushrooms add a deep savory note, but white button mushrooms are fine. Chop them small so they distribute through each serving instead of making the filling feel wet or bulky.
  • Time: 2 minutes; Cost: $. Pecans bring crunch, while walnuts or pumpkin seeds work at similar amounts. Toast nuts briefly in a dry skillet for a fuller flavor, then cool before chopping so they stay crisp.
  • Time: 2 minutes; Cost: $. Fresh parsley brightens the finished squash, yet chopped sage or thyme can stand in. If using dried herbs, add them with the vegetables rather than as a garnish, where their texture is noticeable.

How to make Vegan Stuffed Acorn Squash with Lentils

  1. Heat the oven

    Time: 5 minutes active; Cost: $. Set an oven rack in the center and heat to 400°F. Line a rimmed sheet pan with parchment. Halve each squash from stem to tip, scoop out seeds, and brush cut sides evenly with oil, salt, and pepper.

  2. Roast the squash

    Time: 35 minutes mostly hands-off; Cost: $. Arrange squash cut-side down on the prepared pan. Roast until a fork slips through the thickest part with little resistance. Turn halves cut-side up for the final five minutes, allowing surfaces to dry slightly.

    Vegan Stuffed Acorn Squash with Lentils: Roast the squash
  3. Cook the vegetables

    Time: 12 minutes active; Cost: $. While squash roasts, warm remaining oil in a large skillet over medium heat. Cook onion and celery until softened, then add mushrooms and a pinch of salt. Continue until mushroom moisture has cooked away and the pan looks mostly dry.

  4. Season the filling

    Time: 8 minutes active; Cost: $. Stir garlic into the skillet for thirty seconds. Add lentils, maple syrup, Dijon mustard, pecans, and parsley. Fold gently until lentils are hot and coated. Taste, then add salt and pepper if the filling needs a clearer savory edge.

    Vegan Stuffed Acorn Squash with Lentils: Season the filling
  5. Fill the halves

    Time: 5 minutes active; Cost: $. Transfer roasted squash to a serving platter or leave it on the pan. Divide warm lentil mixture among the cavities, mounding it slightly. Press filling gently with a spoon so it settles into the curved centers and stays put.

  6. Finish and serve

    Time: 3 minutes active; Cost: $. Scatter extra parsley and pecans over the stuffed squash. Serve while the filling and squash are hot. For a buffet, place the platter near the end of the line, after sides, so the portioned main remains easy to reach.

The recipe

Vegan Stuffed Acorn Squash with Lentils

Print

Roasted acorn squash halves hold savory lentils, mushrooms, pecans, and maple mustard, creating a hearty vegan Thanksgiving centerpiece with familiar flavors, crisp edges, and simple make-ahead flexibility for busy holiday tables.

Course: Main Course · Cuisine: Other

Prep
35 min
Cook
35 min
Total
70 min
Yield
4 servings

Ingredients

Instructions

  1. Prepare squash. Heat oven to 400°F and line a rimmed sheet pan with parchment. Brush cut sides with 1 tablespoon oil; season with half the salt and pepper. Set halves cut-side down, leaving space between them.
  2. Roast. Roast until a fork slides easily into the thickest flesh, 30 to 35 minutes. Turn halves cut-side up for the final 5 minutes; the cavities should look dry and lightly browned.
  3. Cook vegetables. Meanwhile, heat remaining oil in a large skillet over medium heat. Cook onion and celery for about 5 minutes, stirring, until softened. Add mushrooms and cook until their liquid evaporates and the skillet appears mostly dry.
  4. Build filling. Stir in garlic for 30 seconds, just until fragrant. Add lentils, pecans, maple syrup, Dijon, and remaining pepper. Fold gently until hot and evenly coated, then taste; add a pinch of salt only if needed.
  5. Fill and warm. Divide filling among the roasted cavities and mound it slightly. Press with a spoon so it settles securely, then return the pan to the oven for 5 minutes, until the filling is piping hot.
  6. Serve. Serve immediately with cranberry sauce, green beans, or a tart salad. For buffet portions, cut each stuffed half into two wedges after warming, using a sharp knife and steady board.

Notes

  • Acorn squash varies in size. Begin checking at 30 minutes; continue roasting until a fork enters the thickest flesh easily, because large squash may require several extra minutes.
  • For canned lentils, rinse and drain thoroughly, then leave them in a sieve while chopping vegetables. Removing excess liquid keeps the filling substantial rather than loose.
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  • stuffed acorn squash
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Tips

  • Time: 3 minutes; Cost: $. A sharp, sturdy chef’s knife makes squash safer to halve. If a squash rocks on the board, trim a thin sliver from its rounded bottom first, keeping fingers clear of the blade path.
  • Time: 2 minutes; Cost: $. Do not crowd the squash halves. Use two sheet pans if needed, because crowded pans trap steam and delay browning. Rotate pans halfway through roasting when using two oven racks.
  • Time: 4 minutes; Cost: $. Let canned lentils drain in a sieve while chopping vegetables. Excess liquid can make the filling loose, especially if mushrooms have not cooked down fully. The skillet should look dry before lentils go in.

Serving and storage

Time: 10 minutes active; Cost: $ to $$. Serve one stuffed squash half per person with cranberry sauce, green beans, and a crisp salad. For a larger Thanksgiving spread, cut each half in two after filling and offer it alongside other mains. Warm white lights and one large platter keep the table from feeling busy. A spoonful of extra maple mustard dressing can be passed separately, but the filling is seasoned to stand on its own.

Vegan Stuffed Acorn Squash with Lentils ready to serve

Questions people ask

Can I make this stuffed acorn squash ahead?

Yes. Roast the squash and cook the lentil filling up to one day ahead and refrigerate separately. Rewarm covered squash at 350°F and heat filling in a skillet before assembling.

What can I use instead of lentils?

Cooked wild rice, drained white beans, or both work. Keep replacements dry; mash a few beans if needed so filling holds together.

How do I know when the squash is done?

A fork should enter the thickest flesh easily, without watery or collapsing flesh. Timing varies by squash size, so tenderness is more reliable than minutes listed.

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Before you go

Save this for the Thanksgiving menu when you need one vegan main that earns its place without taking over the kitchen. Put squash, lentils, and mushrooms on the grocery list, then handle the filling while the oven works. The components are simple enough to prep ahead, which leaves more room for the sides everyone expects.

Vegan Stuffed Acorn Squash

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Vegan Stuffed Acorn Squash

Tags

  • vegan-thanksgiving-recipes
  • stuffed-acorn-squash
  • lentil-stuffing
  • vegan-holiday-main-dish

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