01 -  Line a baking sheet (approx. 9x13 inches or similar) with parchment paper. 
 02 -  In a medium bowl, mix Greek yogurt, honey (or maple syrup), and vanilla extract until well combined and smooth. 
 03 -  Spread the yogurt mixture evenly over the prepared baking sheet to about 1/4-inch thickness. 
 04 -  Scatter the berries evenly over the yogurt. Sprinkle with chopped nuts, coconut, and lemon zest if using. 
 05 -  Gently press toppings into the yogurt with clean hands or a spatula to help them adhere. 
 06 -  Freeze, uncovered, for at least 2 hours or until completely firm. 
 07 -  Once frozen, remove from the freezer and break into shards or bark pieces. 
 08 -  Serve immediately or store in a freezer-safe container for up to 1 month.