"Simple but decadent salted fudge brownies with a sweet and tangy Greek yogurt swirl...."
INGREDIENTS
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3/4 cup (1 1/2 stick) unsalted butter 2 ounces dark chocolate (72%), chopped 1/4 cup plus 2 tablespoons Dutch-process cocoa powder 2 cups granulated sugar 3 large eggs 1 1/2 teaspoons vanilla extract 1 cup all-purpose flour 1/2 teaspoon Maldon sea sa