Preheat oven to 350°F. Line a 9-inch square metal baking pan with parchment paper; set aside.

Add granola to a food processor and pulse until finely ground. Add brown sugar and butter; pulse until combined. Press crumb mixture into prepared pan. Bake until firm about 12 minutes. Cool completely.

Meanwhile, with electric beaters, beat cream cheese with yogurt, sweetened condensed milk and orange zest until smooth. Spread mixture over crust; smooth top.

Refrigerate for 6 or up to 24 hours or until firm. Garnish with extra orange zest, if desired. Cut into bars and serve.