Thaw the spinach. (you can microwave for 10-20 sec). Mix in eggs and half of the milk.
Mix flour, salt, and sugar. Add the dry ingredients with the wet, mix, and add also rest of the milk.
Let the batter rest for 10-30 minutes.
Heat your pan to medium heat. Add some butter or oil to the pan. Pour ¼ cup of batter if you use an 8-10 inch pan or 2-3 tablespoon for 3-inch pancakes on a pancake pan.
Flip the pancakes when they have some color and the top is set from the edges.
Video
Notes
Add 1-2 teaspoon baking powder if you want a slight fluffiness to the pancakes. For American-style spinach pancakes use ½ cup more flour and 2-3 teaspoon baking powder, 1 teaspoon vanilla, and 2 tablespoon sugar.This amount makes 40-50 small 3 inch pancakes or eight medium-sized ones, 8-10 inches. If you use fresh spinach instead of frozen use 4 cups of rinsed fresh spinach and blend it with the milk first, then add the rest of the ingredients to the blender to make a smooth batter. Finnish spinach pancakes are traditionally served with lingonberry jam and mashed potato.If you want to serve sweet pancakes you can serve these with berry jam, cottage cheese, yogurt, ice cream, berries, fruit, maple syrup, or honey. Savory fillings; smoked salmon, tuna, or prawns mixed with creme fraiche, onion, salt, and pepper.