Preheat your oven to 375°F (190°C).
Heat olive oil in a large pan over medium heat. Sauté onion and garlic until translucent.
Add the wild greens to the pan and cook until wilted. Season with salt, pepper, dill, and parsley. Remove from heat and let cool.
To make the feta mousse, blend feta cheese, Greek yogurt, lemon zest, olive oil, and honey in a food processor until smooth. Season with salt and pepper to taste.
Lay a sheet of phyllo on a clean work surface and brush with melted butter. Top with another sheet and brush again. Repeat this process until you have 4 layers.
Place half of the greens mixture along one edge of the phyllo stack, leaving a 1-inch border.
Dollop half of the feta mousse on top of the greens. Roll the phyllo over the filling to create a log, tucking in the edges as you go.
Place the roll seam-side down on a baking sheet. Repeat steps 5-7 with the remaining phyllo, greens, and feta mousse.
Brush the tops of the rolls with the remaining melted butter.
Bake for 45 minutes, or until the phyllo is golden brown and crisp.
Allow to cool slightly before slicing and serving.