Chestnut Brownie Squares

Guys!! These may be one of my most favorite recipes yet! These thick and slightly-chewy brownies are studded with chestnut and oh my gosh are they awesome! Okay, seriously, I fricken’ love these! These chestnut brownies squares are very close to my number one food ever… I know right!?

Chestnuts are amazing because their flavor is so unique. My family and I like to think that it tastes like bread. I know that sounds weird, the but the light toasty flavor of bread kinda comes through in chestnuts. But, they are also a little sweet and nutty. I mean… it’s just the best nut in my opinion.

Since chestnuts have such great flavor, why not throw them into brownies? Chocolate and chestnuts is a great pairing. They have all the sensations you would want: sweet, toasty, nutty, chocolatey, fudgy, and chewy!

I could easily see these chestnut brownie squares as being one of my favorite recipes I’ve developed on the blog. I just love brownies and chestnuts so much and never really thought to put them together until now. They seem awkward at first, but they truly do come together beautifully.

Let’s look at some recipe/ingredient tips:

To make these, keep in mind that the chocolate you use will affect the flavor profiles. If you use cheap chocolate, you will be able to tell the difference with a higher quality chocolate.

For the applesauce, I used my recipe for One-Ingredient Applesauce that is super simple and perfect for when you just need a little for a recipe. I would recommend staying away from mashed bananas because they are a bit too sticky.

For the oat flour, I just blend rolled oats in a food processor until super fine (like flour!). This is probably the easiest and most economical choice.

For the chestnuts, I used roasted ones from the store. They were fresh will no added sugar or flavorings. I chopped them up a bit, and then threw them in. If you are starting out with raw chestnuts still in its shell, check out this how to.

For the chocolate, I used Eating Evolved Dark Chocolate because it has no additives and crap. It’s just real ingredients and pure food. Any chocolate will work, but remember, the flavors will change with varying quality of chocolate.

I think those are all my notes as this recipe is relatively easy, nothing too complicated.

Let’s get to this awesome brownie recipe!

5 Word Summary:


Slight chew




If you love chocolate, check these recipes out!

Chocolate Peppermint Cookie Dough Bites

Chocolate Sticky Rice Cakes (nian gao)

Bakery Style Chocolate Muffins

Chocolate Orange Brownie Bites (no added sugar)

Chestnut Brownie Squares

These brownies are slightly chewy, thick, and super chocolatey! They are also vegan, dairy-free, and gluten-free.

Course Dessert, Snack
Cuisine American
Keyword brownies, chestnut, chocolate, dairy-free, gluten-free, oil-free, squares, vegan
Prep Time 10 minutes
Cook Time 40 minutes
Total Time 50 minutes
Servings 24 squares
Calories 300 kcal


  • 225 g melted chocolate (I used 100% cocoa baking chocolate)
  • 1 cup applesauce 1
  • 1/4 cup granulated sugar 2
  • 1 cup oat flour 3
  • 1/2 cup cocoa powder
  • 1 tsp baking powder
  • 1/2 tsp salt
  • 1 cup roughly chopped roasted chestnuts


  1. Preheat oven to 350 degrees F. Grease a 9 by 9 square pan with oil.
  2. In a glass bowl, melt the chocolate in 30 second intervals in a microwave. Mix in between each. It takes about 2 minutes total.
  3. Now, combine all the ingredients and mix until completely homogeneous. If the batter is too thick, add in a bit of nondairy milk to loosen it up.
  4. Pour the batter into the pan. You could put chestnuts on the top if you'd like.
  5. Bake for about 40 minutes or until the squares pull slightly away from the sides. The toothpick test won't work here 🙂
  6. Allow to cool completely in the fridge before cutting. Enjoy!

Recipe Notes

  1. I used my recipe: One-Ingredient Applesauce
  2. I used organic cane sugar, but coconut, brown, white, etc. will all work.
  3. I make my own, I just blend some rolled oats in a food processor. You could also use whole wheat flour.

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