INGREDIENTS
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For the blueberries
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1/4 cup granulated sugar
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1 tsp. chopped fresh thyme
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1 pint fresh blueberries, picked over
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1-1/2 tsp. finely grated lemon zest
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Pinch kosher salt
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For the cake
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8 oz. (1 cup) unsalted butter, softened; more for the pan
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6-2/3 oz. (1-2/3 cups) cake flour; more for the pan
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1/3 cup polenta (cornmeal)
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2 Tbs. finely chopped fresh thyme
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1/4 tsp. kosher salt
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1-1/3 cups granulated sugar
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5 large eggs, at room temperature
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1 Tbs. fresh lemon juice
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2 tsp. pure vanilla extract