Hi Barbara, I haven’t tried making this recipe into a lemon blueberry bread, but what you’d want to do is add a bit more sweetener (a few tablespoons? depending on how sweet you want it), lemon zest (not lemon juice to avoid too much liquid), and fold in blueberries carefully to avoid breaking down the whites. As for the other recipe you tried, it shouldn’t be gritty (though this one you’re looking at is definitely more fluffy) – did you use a super finely ground blanched almond flour?
The best part about this bread is that it makes it so much easier to eat a low carb diet. Yes, there are some savage beasts (joking) that don’t miss bread at all and are happy to just eat bacon seven times a day, but if you’re anything like me, bread was a staple of your diet growing up and you still have a look of yearning in your eyes when they drop that bread basket in the middle of the table at family dinner. I feel your pain. This low carb bread recipe is your shoulder to cry on.