Preheat oven to 375. Spray a 9-inch cake pan with
nonstick spray. Whisk together the oil, yogurt,
eggs, milk and vanilla until combined. Whisk in 2
cups of flour, the baking powder and salt until
just combined. In a smaller bowl toss the frozen
blueberries with the remaining tablespoon of
flour. Gently fold into the cake batter. Spread
the cake batter into the prepared pan.
In another small bowl stir together all of the
streusel ingredients until combined. Sprinkle
evenly over the top of the cake batter. Bake the
whole cake at 375 for 45-60 minutes. Keep an eye
on it toward the end; if it’s starting to get too
brown then cover lightly with foil. Let cool for
at least 15 minutes before serving!
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