INGREDIENTS
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3 Tablespoons olive oil, divided
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3 medium onions, finely chopped
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1/4 cup plus 1 teaspoon granulated sugar
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Kosher salt
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2 0.25 ounce packages active dry yeast
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2 large eggs
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6 Tablespoons butter, melted, plus more at room temp for the pan
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6 cups all-purpose flour, spooned and leveled, plus more for shaping the dough