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Preheat oven to 350 levels. Spray a 9×13 pan with nonstick cooking spray.
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In a medium-size mixing bowl, toss berries with lemon zest and juice, cornstarch, vanilla, and white sugar. Unfold them out within the 9×13 pan.
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In a big mixing bowl, stir collectively flour, powdered sugar, baking powder, and salt. Use a pastry cutter to chop in butter till it resembles a course meal, or pulse the entire thing collectively in a meals processor.
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Pour in half and half and stir to type a thick batter.
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Scoop the batter in giant clumps on prime of the berries to type a pleasant cobbler crust.
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Bake within the preheated oven for 1 hour.