WHISK flour with baking powder and salt in a small bowl.
WHIRL strawberries with milk in a blender until smooth. Add egg, butter, brown sugar and vanilla. Whirl in flour mixture until just combined.
HEAT a large non-stick frying pan over medium. When hot, spray with oil. Cooking in batches, scoop 1/4-cup portions of batter into pan. Cook, flipping halfway through, until just golden around the edges, 3 to 5 min. Serve with butter and maple syrup.
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