Notes
*I used fresh blueberries because they are in season and abundant. However, you could probably make this cake with frozen blueberries. If you go that route, I recommend just adding them straight from the freezer and don’t allow them to thaw.
Additionally, because they will release water and juice, you may want to up the amount of flour by 2 or 3 tablespoons to help absorb some of that. I haven’t tried this so can’t speak from personal experience.
The variance in the measures is that if your berries are bigger, you'll likely want to use 1.50 cups and if they're small ones, probably 1 cup is fine, but use your judgment. Mine were bigger.
**Because we are dealing with fruit which has various levels of moisture, as well as humid summery climates, oven and ingredient variances and so forth, always watch your baked good and not the clock when determining doneness. Leave it in the oven for as long as you need to so it’s cooked though and don’t worry about what the clock says!