Step 1 - Preheat and Prepare the Baking Sheet
Preheat the oven to 400°F/200°C. Line your baking sheet with parchment paper and set aside.
Step 2 - Make the Butter Mixture
Place the 1 tablespoon of vegan butter in a small bowl and microwave in 15-second intervals until mostly melted. Add the 1 tablespoon of plant milk and stir together. Set aside to cool slightly you want this warm but not hot when you brush it on the pastry.
Step 3 -Mix the Cheese Filling
In a medium bowl, combine the vegan mozzarella shreds, vegan Parmesan or nutritional yeast, chopped green onions, garlic powder, and salt. Stir until evenly mixed. The filling should look like a cohesive mixture rather than separate components.
Step 4 - Prepare the Work Surface and Pastry
Lightly flour your work surface. Lay the thawed puff pastry sheet flat on the floured surface. If the pastry came folded, unfold it gently cold pastry unfolds without cracking better than room-temperature pastry.
Step 5 - Apply Butter and Filling
Brush the vegan butter mixture evenly across the entire pastry surface. Reserve approximately 1 tablespoon of the butter mixture for brushing the sliced pinwheels.
Spread the cheese mixture evenly over the buttered pastry, leaving a ½-inch border at the far edge (this helps the roll seal).
Step 6 - Drain and Add Spinach
Complete the spinach draining technique described above. Once thoroughly pressed, spread the dry spinach evenly over the cheese layer. Press it gently into the cheese so it adheres.
Step 7 - Roll Like Cinnamon Rolls
Starting at the edge closest to you, roll the pastry away from yourself, rolling tightly but without excessive pressure that would push the filling out. Keep the roll as even and tight as possible a tight roll produces pinwheels with a clear, defined spiral when sliced. A loose roll produces pinwheels that unravel during baking.
Step 8 - Slice with a Serrated Knife
Use your serrated knife to cut ½-inch slices from the roll. Saw rather than press a gentle sawing motion cuts through without compressing the layers. You should get approximately 12 slices from a standard puff pastry sheet.
Place each slice cut-side up on the parchment-lined baking sheet, spacing them at least 1 inch apart they puff and expand during baking and need room.
Step 9 - Brush and Bake
Brush the tops of each pinwheel slice with the reserved vegan butter mixture. Place in the preheated 400°F oven and bake for 15–20 minutes until the edges are golden brown and the pastry has puffed visibly.
Step 10 - Rest and Serve
Remove from the oven and allow to cool for 5 minutes before serving. The filling is extremely hot immediately out of the oven. Serving warm (rather than piping hot) produces the best eating experience the cheese is still melty but won't burn mouths.
