High Fiber Brownies
If you're craving brownies but want something a little lighter, these High Fiber Brownies are the perfect middle ground. They start with a simple boxed brownie mix, but get a big fiber boost from Kellogg's Extra Fiber All-Bran cereal, so you still get a chewy, chocolatey treat with a bit more staying power. We love these as an afternoon snack, lunchbox treat, or a slightly "better-for-you" dessert option when the brownie craving hits. Not to mention, they are so easy-to-make!
Need an allergy-friendly alternative? Check out our Fudgy Brownies without Eggs or Milk!

Quick Look: High Fiber Brownies
- ⏱ Prep Time: 20-25 minutes
- 🔥 Bake Time: 25 minutes
- ⏳ Total Time: 45 minutes
- 🍽 Servings: 30 mini brownies
- ⚡️ Calories: 91
- 🍫 Flavor Profile: Chocolatey, slightly nutty, soft & snackable
- 👌 Difficulty: Easy, perfect for beginner bakers and busy weekdays.
Jump to:
Why You'll Love This Recipe
- Boosted with fiber: Using All-Bran cereal adds extra fiber, so these brownies feel a little more satisfying than a standard box mix.
- Semi-homemade and simple: You still get the reliability of a boxed brownie mix, with just a couple of extra ingredients and one bowl.
- Kid-approved treat: They're chocolatey and brownie-like enough that kids (and adults!) will happily eat them, even with the added fiber.
- Great for snacks and lunchboxes: Bake them in muffin cups for easy, portable portions you can grab and go.
- Customizable: Try it with your favorite brownie mix! Or, top with a little whipped topping, a drizzle of chocolate, or sprinkles to make them feel more like dessert.
Key Ingredients
Here are some of the ingredients you will need for High Fiber Brownies:

- Kellogg's Extra Fiber All-Bran cereal: This is where most of the fiber comes from. Soaking the cereal in water softens it and blends it into the batter, adding fiber without losing the brownie vibe.
- Water: Softens the cereal and creates the base for the batter before adding the mix.
- Baking powder: Helps the brownies (or brownie "muffins") rise a bit so they're not too dense.
- Boxed brownie mix: Keeps things simple and chocolatey-use your favorite boxed brownie mix!
How to Make High Fiber Brownies

- Step 1: Soak the cereal:
Add the All-Bran cereal and water to a large mixing bowl. Stir and let it soak for 5-15 minutes, until the cereal is softened and most of the water is absorbed.

- Step 2: Mix in the baking powder and brownie mix:
Sprinkle the baking powder over the softened cereal and stir to combine. Add the boxed brownie mix and stir until everything is well blended. The batter will be thicker and a little more textured than a regular brownie batter.

- Step 3: Fill the muffin cups:
Line muffin tins with paper liners or lightly spray with nonstick spray. Fill each cup about ½ full with batter-you want small, snack-size brownies.

- Step 4: Bake:
Bake at 350°F for about 20-25 minutes, or until the tops are set and a toothpick inserted in the center comes out mostly clean or with a few moist crumbs.

- Step 5: Cool and serve:
Let the brownies cool in the pan for a few minutes, then transfer to a wire rack to cool completely. Top with a dollop of light whipped topping, a drizzle of chocolate, or sprinkles if you'd like to dress them up.
Expert Tips for High Fiber Brownies
- Let the cereal soak fully: Make sure the All-Bran has time to soften in the water before adding the brownie mix. This helps the texture stay moist and brownie-like instead of dry.
- Don't overfill the muffin cups: Filling each cavity about halfway gives you small, snackable brownies that bake evenly. Overfilling can make them dense in the middle.
- Check doneness early: Start checking around 18 minutes; every oven is a little different. You want the tops set and a toothpick to come out with a few moist crumbs.
- Add toppings after baking: A little light whipped topping, chocolate drizzle, or sprinkles makes them feel more dessert-like, especially for kids.
FAQs
Yes. Most standard boxed brownie mixes will work with this method. The flavor and texture may vary slightly, so keep an eye on the baking time and adjust as needed.
This recipe was developed with Kellogg's Extra Fiber All-Bran cereal, which has a specific texture and fiber content. You can experiment with similar bran cereals, but the results may change, so start with a small batch if you're testing.
They're chocolatey and brownie-like, but the All-Bran adds a slightly different, more fiber-rich texture. Most people enjoy them as a lighter, snack-style brownie rather than a super fudgy dessert brownie.
Store completely cooled brownies in an airtight container at room temperature for 2-3 days, or in the refrigerator for up to 4-5 days. For longer storage, they can be frozen in a freezer-safe container for up to 2 months.
Yes, you can bake them in a greased or parchment-lined baking pan. The baking time may change depending on the pan size, so start checking earlier and look for the same visual cues: set top and a toothpick with a few moist crumbs.
Don't Forget to Check Out Our Favorite Desserts!
If you tried these High Fiber Brownies or any other recipe on my blog, please leave a 🌟 star rating and let me know how it went in the comments! Thanks for visiting, and come back again!

High Fiber Brownies
Equipment
- 1 Muffin Tin
Ingredients
- 3 cups Kellogg's Extra Fiber All Bran Cereal
- 2 ½ cups water
- 1 ½ teaspoon baking powder
- 1 box Brownie Mix
Instructions
Soak the cereal:
- Add the All-Bran cereal and water to a large mixing bowl. Stir and let it soak for 5-15 minutes, until the cereal is softened and most of the water is absorbed.
Mix in the baking powder and brownie mix:
- Sprinkle the baking powder over the softened cereal and stir to combine. Add the boxed brownie mix and stir until everything is well blended. The batter will be thicker and a little more textured than a regular brownie batter.
Fill the muffin cups:
- Line muffin tins with paper liners or lightly spray with nonstick spray. Fill each cup about ½ full with batter-you want small, snack-size brownies.
Bake:
- Bake at 350°F for about 20-25 minutes, or until the tops are set and a toothpick inserted in the center comes out mostly clean or with a few moist crumbs.
Cool and serve:
- Let the brownies cool in the pan for a few minutes, then transfer to a wire rack to cool completely. Top with a dollop of light whipped topping, a drizzle of chocolate, or sprinkles if you'd like to dress them up.
Notes
- Let the cereal soak in the water until softened before adding the brownie mix.
- Fill muffin cups about halfway for small, snack-size brownies that bake evenly.
- Start checking doneness a few minutes before the suggested bake time; ovens vary.
- Store leftovers in an airtight container at room temp for 2-3 days, or refrigerate for up to 4-5 days.
- Toppings like light whipped topping, chocolate drizzle, or sprinkles make these feel more like dessert while still keeping the fiber boost.













These high-fiber brownies are delicious and incredibly easy to make. They have just the right amount of sweetness with the addition of the cereal. Instead of muffin tins, I used a buttered 13 by 9 inch Pyrex baking dish and had to add about 5 minutes to the baking time. I'll be making these again and again.
How do you store after baking? Room temperature or refrigerate? How long will they last?
So easy!
Luke I use your brownie recipe(no eggs, no milk), and add cereal?
This is my type of brownie! From a box mix, but still healthy, yeah!
I'm wondering if this would work with any old brownie mix, or if I could make it with my own homemade brownie mix (minus the wet ingredients). Sounds like a nice way to give people a good reason to eat brownies... 'cause they're healthified!
Thanks, Cheryl 🙂
WW points Plus value = 3 points
These look amazing. I would love to have you share this at this weeks Wednesdays Adorned From Above Blog Hop. It runs from Tuesday night through midnight Sunday. Here is the link to the party.
http://www.adornedfromabove.com/2013/02/wednesdays-adorned-from-above-blog-hop_26.html
We hope to see you there.
Debi and Charly @ Adorned From Above
Yummy chocolate brownies!
Thanks, Joann! They are yummy!!
yummmmmmm!! I have evrything sitting on the counter waiting for me to make these!!!!
Mom!!! You left a comment!! First time in a year and a half blogging!! Good job!
mmmmmmm!! I have evrything sitting on the counter waiting for me to make these!!!!
This is the second "healthier" brownie I have seen tonight.... I think it is a sign to make brownies this weekend lol
Awesome recipe!
YUMMY~
Really? I could get more fiber and STILL eat brownies?? Hooray! i was recently told that increasing my fiber would be beneficial and this brownie has my name written all over it! Thanks!