Preheat oven to 400. butter a standard muffin tin. Combine flour, baking powder, cinnamon, and salt in a large bowl, whisk to combine.

In a medium bowl, combine butter, vanilla bean scrapings, sugar, milk, and egg: whisk to combine. Fold butter mixture and fruit into flour mixture: use no more than 10 strokes.

For struesel: mix all ingredients in a bowl with fingers until crumbly.

Spoon 1/4 C batter into prepared cups: press 2 T Struesel on top of each. Bake until tops are golden, 15-17 min. Remove from oven: let cool in pan 15-20 min. before transfering to wire rack. Serve warm or at room temperature.