Line a 9x13 baking sheet with parchment paper, pressing it into all corners so it stays put. I learned this the hard way when parchment shifted mid-spread and I had to start over. Press it down firmly around the edges.
Combine Greek yogurt, honey, vanilla, and orange juice in a large bowl and stir for one full minute. You want the mixture completely smooth with no honey streaks remaining anywhere. I use a spatula to scrape down the bowl sides three times because honey loves hiding in corners.
Spread the yogurt mixture across your prepared sheet in an even layer about half-inch thick. This thickness is critical because thinner bark shatters into shards while thicker bark takes forever to freeze solid. Use an offset spatula or the back of a spoon to level everything out.
Scatter your diced strawberries, blueberries, and raspberries across the yogurt surface in a scattered pattern. Don't clump them together. Sprinkle the lemon zest evenly across everything, then add salt, pistachios, graham crumbs, and white chocolate chips. The zest matters because it prevents the 4th of july frozen yogurt bark family recipe from tasting one-dimensional.
Place the sheet in your freezer for at least 4 hours, though overnight is genuinely better. I usually make this in the morning and freeze it through dinner so the texture becomes completely firm. Cold yogurt bark snaps satisfyingly rather than bending.
Remove the sheet and let it sit at room temperature for exactly 3 minutes. This slight thaw makes breaking it into pieces so much easier because the parchment releases instead of sticking. Don't skip this step or you'll be fighting frozen bark for minutes.
Break the 4th july healthy frozen bark into irregular shards by hand, snapping it like you would chocolate. The uneven pieces look more appetizing and feel more intentional than cutting perfect rectangles. Transfer pieces to a storage container with parchment between layers.