How to Make It
Whisk together the brown rice flour, potato starch, almond flour, baking powder, and salt in a large bowl. In a separate bowl, whisk together the bananas, eggs, butter, and vanilla. Whisk the wet ingredients into the dry ingredients until just combined (do not overmix).
Melt butter in a large nonstick skillet or griddle over medium heat. For each pancake, spoon a scant ¼ cup batter onto the prepared skillet. Cook until bubbles appear evenly over the top of each pancake, 4 to 6 minutes. Drop a few blueberries onto each pancake and flip. Continue cooking until evenly golden and cooked through, 1 to 2 minutes more. Repeat, buttering the skillet between batches.
Serve with the maple syrup and butter.