INGREDIENTS
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1-1/2 sticks cold unsalted butter, 1 stick cubed
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1/2 large onion, finely chopped
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1 tablespoon poppy seeds
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Kosher salt and freshly ground pepper
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1 cup coarsely shredded Dill Havarti cheese (3 ounces)
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2 cups all-purpose flour, plus more for dusting (I used Bob’s Red Mill Gluten-Free All-Purpose Flour)
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2 teaspoons baking powder
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1/2 teaspoon baking soda
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1 teaspoon salt
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1 cup buttermilk