These decadent Keto Blondies are perfectly chewy and loaded with walnuts. Lightly sweet, richly buttery, and with a subtle hint of rum, these are the best low carb blondies I’ve ever had!
I had other keto recipes in the queue to post here first, but I made these keto blondies last week and I just couldn’t wait to share them!
Frequently Asked Questions
- What is a Blondie?
- Is there alcohol in this low carb blondie recipe?
- Do I have to use brown sugar substitute in these blondies?
- What does the psyllium husk do and can I still make these keto blondies if I don't have it?
- More Keto Dessert Bar Recipes
I love a good blondie, but keto blondies I’ve had in the past never measured up to the real thing for me. I honestly didn’t even know if it was possible to get that buttery, chewy goodness right using keto friendly ingredients – so for the longest time I didn’t even bother to try.
I finally went for it though, and I’m thrilled to say that these butter rum blondies are everything you’ve been missing in a keto blondies recipe – and then some!
Delicious with a cup of coffee in the morning, or as a sweet ending to dinner, these low carb blondies are so good that I had to cut them in half, and then freeze them, to keep from eating them all in just a day or two.
What is a Blondie?
A blondie is similar to a brownie in that it’s a chewy dessert bar, but a blondie is typically vanilla flavored instead of chocolate. To get a richer flavor it’s also sweetened with brown sugar rather than white.
Is there alcohol in this low carb blondie recipe?
These keto blondies don’t actually contain any rum, though you could use the real thing if you wanted to. I chose to use a rum flavoring/extract because it achieved the flavor I wanted without adding a lot of extra liquid to the batter. Any brand of extract will do, I used McCormick brand that I found in the baking aisle.
You could also omit the rum flavor and just double the amount of vanilla extract used in this low carb blondie recipe.
Do I have to use brown sugar substitute in these blondies?
For my sweetener, I used Lakanto Golden, which helped give these keto blondies that warm, rich flavor that you can’t get with a white sweetener (but if white sweetener is all you have, then go ahead but the end result will taste different.
Swerve brown, or any other brown sugar alternative should work similarly – though I can’t guarantee the exact results I had if you don’t use the Lakanto (not sponsored or affiliated with Lakanto in any way, this is just what I used.)
What does the psyllium husk do and can I still make these keto blondies if I don’t have it?
These keto blondies make use of psyllium husk powder, which gives them an authentic, chewy texture.
You can omit it if you like, but you’ll end up with a harder, crumblier result, more like a cookie than a blondie. Not necessarily a bad thing, but nowhere near as good as trying this low carb blondie recipe as written!
You can find psyllium husk powder on sites like Amazon or Thrive Market for very good prices.
More Keto Dessert Bar Recipes
Cranberry Bars with Streusel Topping
Fudgy Keto Brownies – Wholesome Yum
Keto Blondies – Low Carb
- Total Time: 28 minutes
- Yield: 9 servings 1x
Description
These decadent Keto Butter Rum Blondies are perfectly chewy and loaded with walnuts. Lightly sweet, richly buttery, and with a subtle hint of rum, these are the best low carb blondies I’ve ever had!
Ingredients
Instructions
- Preheat the oven to 375 degrees Fahrenheit.
- Combine all of the ingredients, EXCEPT FOR THE NUTS, in a large bowl.
- Mix with a wooden spoon until just combined – don’t over mix or they will be tough.
- Stir in the walnuts.
- Line a 9 x 9 square pan with parchment paper (this really helps get them out easily.)
- Spoon the batter into the pan and spread evenly to the edges.
- Bake for 20 minutes.
- Remove and cool for 30 minutes before slicing.
- Store in an airtight container in the refrigerator for up to 1 week, or in the freezer for up to 3 months.
Notes
Approximate net carbs per blondie = 3g.
- Prep Time: 8 minutes
- Cook Time: 20 minutes
- Category: Keto desserts
- Method: baking
Nutrition
- Serving Size: 3 x 3 square
- Calories: 260
- Fat: 23g
- Carbohydrates: 6g
- Fiber: 3g
- Protein: 8g
If you love the idea of keto desserts but can’t even with using your oven during the heat of summer, pin this keto blondies recipe for later and try some of these delicious no bake keto desserts instead!
Stacia Jahnke says
What kind of Physillum Husk Powder did you use? The kind I have turns baked goods purple. And although purple is my FAV color, I don’t want all my goodies to be that color :D
MOLLY GARSIDE says
The first low carb dessert recipe that I can rave about. So delicious. Thank you so much for this recipe and I will be following you and experimenting with your recipes.
Mellissa Sevigny says
Yay! Thanks Molly!
Hélène says
I am going to use coconut oil for the butter, going with the rum tropical theme! I’ve had rum extract in the house for yrs for our tropical steel cut oats w/pineapple bake. It’s so tasty in recipes.
Sharon says
I didn’t realize when I made these that you were the one who created them or I would have known how good they’d be. I have your oookbook Keto for Life and I love the recipes I’ve tried. This cookie is no exception….outstanding! I didn’t have rum extract so I subbed 1/2 tsp maple flavoring. Mmmmmm
Maria Isais says
I love this recipe because it’s easy and they are delicious. The first time I kept them 20 minutes in the oven but they overbaked a little…still good though. Second time I added chocolate chips and reduced time in oven to 15 minutes..PERFECT
Anne says
I may have overcooked these just a bit. It doesn’t matter though because they were still amazing! Thank you for an easy, delicious recipe!
Midge says
Anything I can substitute for the rum flavoring?? Will they be good if I omitted it??
Mellissa Sevigny says
Caramel flavoring would also work, or you can double the vanilla!
Deb Hmielowski says
Hi.
Can anyone give me suggestions about artificial sweeteners.
Most of them give me a stomach ache. And they are really sweet.
Help and suggestions please.
Quinci says
Delicious! Made these last night and had one with my morning coffee. I used roasted pecans (and added a few more than the recipe called for to make them extra yummy) and they turned out perfect. Will definitely be making these again.
Lydia Vanderplas-Guijt says
Saw your post today and just had to make these. The bake doesn’t just look good it is good! Yum yum yum. Going to be hard just to have the one piece. The flavor is so nice and rich. Next time I might add some chocolate chips to make it even more decadent. Thanks for this great recipe Melissa!
Mellissa Sevigny says
Love that you went for it so quickly Lydia! So happy that you loved them as much as we did and chocolate chips are always a good idea in my book!!!
Linda Kistner says
I made these this afternoon and they are wonderful! I will have all kinds of fun changing up the flavors. Thank you so much for this recipe!