Keto Butter Rum Blondies – Low Carb

4.9 from 14 reviews

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!


1/2 cup butter, melted
1/2 cup brown sugar alternative (I used Lakanto Golden)
1/2 teaspoon baking powder
1/4 teaspoon kosher salt
1 large egg
1 teaspoon vanilla extract
1 teaspoon rum extract
2 cups superfine blanched almond flour
1 tablespoon psyllium husk powder
1/3 cup chopped walnuts (or pecans)


  1. Preheat the oven to 375 degrees Fahrenheit.
  2. Combine all of the ingredients, EXCEPT FOR THE NUTS, in a large bowl.
  3. Mix with a wooden spoon until just combined – don’t over mix or they will be tough.
  4. Stir in the walnuts.
  5. Line a 9 x 9 square pan with parchment paper (this really helps get them out easily.)
  6. Spoon the batter into the pan and spread evenly to the edges.
  7. Bake for 20 minutes.
  8. Remove and cool for 30 minutes before slicing.
  9. Store in an airtight container in the refrigerator for up to 1 week, or in the freezer for up to 3 months.


Approximate net carbs per blondie = 3g.


Keywords: Best keto blondies, low carb blondies, keto bars