Add spinach, scallions, milk, melted brown butter, eggs, salt, parmesan, and lemon juice to a large blender.

Mix on high speed for 2-3 minutes until completely smooth. If you still have green clumps, try using an immersion blender in a large mixing bowl.

Add your flour on top of the wet ingredients and fold using a spatula until fully combined.

Let batter rest for 5-10 minutes and preheat a crepe pan (or nonstick skillet) over low-medium heat.

Remove pan from heat for 30 seconds, then quickly spoon 1/3 cup of batter onto the middle of the pan and twist to spread evenly.

Smooth excess batter with a spatula. Cook for 3-5 minutes on each side, using a nonstick spatula to flip the crepe when the first side is cooked.

Rest on a plate in a pile to keep warm. Transfer each crepe to a plate and fill with your favorite fillings (cream cheese, grated cheddar, smoked salmon, etc.)