How to Roast Acorns at Home?

Fall is here, and that means it’s time to roast some acorns! It’s a great way to use this widely available nut. Many of us can even pick them up in our own backyards.

We’ll show you how to roast acorns. We’ll start with some basic tips for prepping your acorns and then move on to the step-by-step instructions for roasting them at home.

Before Starting the Acorn Roasting Process

Before roasting your acorns, there is some preparation you need to do. Because of their tannic content, acorns are bitter and inadequate to eat raw when in large quantities. To remove the bitterness, you need to leach the tannins out of the nuts by boiling them in water. Here is our guide to leach acorns.

How to Roast Acorns in The Oven

Once the tannin content is removed, it is time to start roasting the acorns. Dry roasting them in the oven is the easiest and most effective way. Here’s how to do it:

  1. Preheat your oven to 375 °F (190 °C)

    Turn your oven on around 20 minutes before at 375 °F (190 °C).

  2. Place the acorns in the oven

    Spread a single layer of acorns on a baking sheet with no oil.Acorns on a baking sheet inside the oven

  3. Bake the acorns for 10 – 15 minutes

    Check them from time to time. The longer you leave them, the crunchier they will be.

  4. Look for a color change

    Once the acorns have changed to a slightly darker color, they are ready.Acorns roasting in the oven with a darker color

  5. Allow the acorns to cool before eating them

    Put the acorns on a plate and wait a bit for them to cool down. After that, they will be ready.The roasted acorns result

Play With Flavor Combinations

While roasted acorns are delicious on their own, you can also experiment with adding different seasonings or spices to your batch.

Here are a few tips to produce different flavors:

  • If you think something is missing, you should start by adding salt. For most people, it’s the best addition.
  • Rosemary fans will love roasting acorns with a touch of rosemary, which adds a nice herby flavor to the nuts.
  • Another great condiment is cayenne pepper. Add a pinch or two to your acorns for a spicy kick.
  • If you are looking for a crunchier and crispier texture, try baking the acorns at a higher temperature and leaving them for longer in the oven.

Whenever you find a good seasoning, you can also experiment with the time you add it. For example, adding the seasonings at the beginning of the roasting process will give a more intense flavor to the acorns. But adding them at the end will result in a subtler taste. One thing is for sure; you will have fun experimenting and discovering which flavors you like best!

Roasting Temperature and Time

The acorn roasting method we discussed is intended for eating the nuts right after. But it’s important to understand that if you plan to prepare different products with acorns, you may need to roast them at different temperatures and lengths of time. That’s because the longer the time in the oven and the higher the temperature, the heavier the flavor. And for some products, you want a moderate flavor. Here are two examples to illustrate my point.

In our acorn liqueur recipe, we advise you to roast the acorns for 15 minutes at 400 °F (204 °C). That’s because you don’t want a liqueur with a very intense and smoky flavor. Instead, you want a smooth and rich liqueur.

On the other hand, we recommend a 30 to 40 minute roasting time for our acorn coffee recipe. When it comes to coffee, an intense and smoky flavor is actually preferred by many people. You will want those acorns to be very dark and well roasted.

So as you can see, different roasting times will give you unique results that will be more appropriate to some recipes than others. If you are still new to this, it’s good to experiment with different times and see what works best for you.

When do you know when the acorns are roasted?

Regardless of what you want to prepare with your toasted acorns, the best way of knowing if they are roasted is by looking at the color.

A light golden-brown color is ideal if you want to eat them. You will need a much darker color for other products, such as coffee.

But no specific color will tell you when they are fully roasted. Your particular taste also plays a role. The best thing is to experiment with lighter and darker tones to see which works best for your specific preferences.


Whether you are looking for a natural and healthy snack or are interested in exploring new ways to use acorns, roasting them at home is an easy and delicious way to do it.

If you want to do it outside, check our guide on how to roast acorns over a fire.

So grab a few acorns and start experimenting today! You are sure to discover new flavors that you will love.


Does roasting acorns remove tannins?

No, roasting acorns will not remove their tannins. To do this, you need to boil the acorns in water, in a process called leaching.

Can I roast acorns in the microwave?

Roasting acorns in the microwave is not recommended, as it can easily burn them. An oven is generally a better option, giving you better control over temperature and roasting time.

Can I roast acorns inside the shell?

No. It is not recommended to roast acorns in their shells, as it will burn the outer shell and not properly toast the kernel inside. It’s always best to remove the acorn before starting the roasting process.

Do I have to break or cut acorn kernels in half before roasting them?

Although it’s not mandatory, breaking or cutting acorns in half can help to roast them by exposing more of the kernel to heat. If you roast whole acorn kernels, they will be less toasted on the inside.