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Writer's pictureChris Loertscher

A Guide to Roasting Chestnuts



There’s something magical about chestnuts. For me, they hold a special kind of nostalgia—a connection to crisp autumn afternoons spent searching for their prickly shells in the park. As a child, finding a smooth, glossy chestnut felt like uncovering a tiny treasure. The simple pleasure of roasting them at home and peeling them while they were still warm has stayed with me, a comforting ritual that turns a humble ingredient into something extraordinary.

If you’ve ever been curious about chestnuts, or if you’ve stared at them in the grocery store wondering how to prepare them, this guide will take you through everything you need to know—from choosing the best chestnuts to roasting them to perfection.


A view of a bunch of roasted chestnuts still in their shells peeking out from a grey kitchen towel.  They have been scored with an X before roasting and the X has opened up a bit showing the center of the nut inside.
Roasted chestnuts still in the shell

A Brief History of Chestnuts

Chestnuts have been a staple food for centuries, particularly in Europe and Asia. Known as the "bread of the mountains," chestnuts were once a primary source of sustenance for rural communities. In Switzerland, they hold a special place in autumn and winter traditions, often roasted at street markets or used in desserts like vermicelles (sweetened chestnut purée with meringue). Today, they’re a beloved seasonal treat that brings warmth and flavor to chilly days.


When Is Chestnut Season?

Chestnuts are in season during the fall and early winter, typically from September to December. This is when they’re at their freshest and most flavorful, making it the perfect time to enjoy roasted chestnuts or incorporate them into festive recipes.


Viewed from the top.  A white rustic bowl set on a blue background, holding a bunch of chestnuts with three scattered on the side.
Chestnuts

How to Choose the Best Chestnuts

To get the best results when roasting, selecting high-quality chestnuts is key. Here’s what to look for:

  • Appearance: Choose chestnuts with smooth, shiny shells. They should be firm to the touch and free from cracks or holes.

  • Weight: Fresh chestnuts feel heavy for their size, which indicates they’re full of moisture and not dried out.

  • Sound: Shake the chestnut gently—if you hear rattling, it’s likely dried out and past its prime.

  • Color: The shell should be rich brown without any moldy or dark spots.


How to Tell if Chestnuts Are Bad

Unfortunately, not all chestnuts in a batch will be good. Here’s how to spot the ones to avoid:

  • Soft Spots: If the chestnut feels soft or spongy, it’s likely rotten.

  • Holes or Cracks: These could indicate pests or mold.

  • Unpleasant Smell: Fresh chestnuts have little to no scent, so a sour or musty smell is a bad sign.



Freshly roasted chestnuts strewn on a grey and white striped kitchen towel.  Many of the chestnut shells are scored and you can see the shell opening.  One has been shelled and you can see the bare chestnut.
Freshly roasted chestnuts

 

Steps on how to Roast Chestnuts Perfectly

Roasting chestnuts is easy and fills your home with a cozy, nutty aroma.

Here’s a step-by-step guide to perfectly roasting chestnuts:

What You’ll Need:

  • Fresh chestnuts

  • Sharp paring knife

  • Baking sheet

  • Clean kitchen towel


A close-up shot of chestnuts with a scored X on the flat side of the nut.  This is done before roasting them to prevent them from exploding from the steam within.
Scored Chestnuts

Instructions:

  1. Preheat Your Oven: Set your oven to 425°F (220°C).

  2. Wash the Chestnuts: Rinse the chestnuts under cold water to remove dirt and pat them dry.

  3. Score the Chestnuts: Using a sharp paring knife, make an "X" on the flat side of each chestnut (see image above). This prevents them from bursting during roasting and makes peeling easier.


Whole chestnuts in a clear bowl full of water.  Soaking before being transferred to a baking sheet for roasting.
Soaking chestnuts before roasting.

  1. Optional Soaking: Soak the scored chestnuts in water for 15–30 minutes to soften the shells and prevent them from drying out during roasting.

  2. Arrange on a Baking Sheet: Place the chestnuts scored-side up in a single layer on a baking sheet.


A baking sheet with whole chestnuts spread out on it.
Chestnuts on a baking sheet after soaking.

  1. Roast: Roast for 20–25 minutes, shaking the pan halfway through for even cooking. The shells will curl back, revealing the golden flesh inside.

  2. Steam for Easier Peeling: Transfer the hot chestnuts to a clean kitchen towel, wrap them up, and let them sit for 5–10 minutes. The steam helps loosen the shells, making them easier to peel.

  3. Peel and Enjoy: Peel the chestnuts while they’re still warm, removing both the outer shell and inner skin.


A half peeled chestnut being held up by someones hand.  You can see the inner wrinkled nut at the top and the remaining dark brown shell on the bottom.
Peeling the chestnuts after roasting.


Tips for Perfect Roasted Chestnuts

  • Sort by Size: Roast similar-sized chestnuts together for even cooking.

  • Don’t Skip the Score: Scoring is essential to avoid bursting chestnuts (and a messy oven!).

  • Eat Fresh: Roasted chestnuts are best enjoyed warm, straight out of the oven.


 

How to Use Roasted Chestnuts

Roasted chestnuts are delicious on their own, but they’re also versatile. Use them:

  • Chopped in stuffing or salads

  • Blended into soups for added creaminess

  • As a topping for desserts

  • In traditional Swiss recipes like Vermicelles or chestnut cakes


Viewed from above,  A bowl of creamy brown soup with some white cream swirled into it and garnished with bacon bits and chopped chives.  The bowl is set on a blue background with some whole hazelnuts beside it.
"Marronisuppe" a Swiss Chestnut Soup

Easy chestnut recipes to make at home:

Here are some links to some delicious Chestnut recipes:


A side view of a slice of creamy tiramisu made with chestnuts and sprinkled with cacao powder.
Chestnut Cream Tiramisu

Using Chestnuts in the Off-Season

Chestnut season may be short, but that doesn’t mean you can’t enjoy them year-round. Canned or vacuum-packed chestnuts are a great alternative to fresh ones—they’re pre-cooked, making them convenient for soups, stuffings, or desserts. Unsweetened chestnut purée works beautifully in savory dishes like soups or sauces, while sweetened chestnut purée (often used in desserts like vermicelles) adds richness to cakes, pastries, and mousses. These pantry-friendly options are perfect for when you’re craving the earthy sweetness of chestnuts but fresh ones are out of season. Just be sure to check labels to ensure you’re getting the right type—savory or sweet—for your recipe.


The Simple Joy of Chestnuts

Roasting chestnuts isn’t just about making a snack—it’s about creating a moment. There’s something grounding about the process: the gentle rhythm of scoring the shells, the warmth of the oven, the satisfying peel. It’s a way to slow down, connect with the season, and maybe even stir up a little nostalgia.

So, next time you see chestnuts at the market, grab a handful and give roasting a try. Who knows—you might just fall in love with the simplicity of it all, one warm, nutty bite at a time.

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