"It's the only blueberry crisp I'll make...."
INGREDIENTS
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8 tablespoons (1 stick) unsalted butter, plus more for the baking dish
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1 medium lemon
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1 cup old-fashioned rolled oats
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1/2 cup all-purpose flour or gluten-free all-purpose flour blend
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1/4 cup packed light brown sugar
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1 teaspoon vanilla extract
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1/2 teaspoon kosher salt
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4 cups fresh or frozen blueberries (about 24 ounces)
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1/2 cup granulated sugar
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1/4 cup cornstarch
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3/4 teaspoon kosher salt
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1 teaspoon ground coriander
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1 teaspoon vanilla extract
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Vanilla ice cream, for serving (optional)