Pre-heat your oven to 175 degrees C (347 degrees F) and either line your muffin tray with muffin cases or grease with oil.
Blend the soy milk, spinach and vanilla.
In a bowl combine the green soy milk, flour, sugar, baking powder and flax meal.
Pour the batter in the muffins cases and top with the chocolate chips to make the mouth. I recommend putting the eyes on the muffins after cooking so they don't melt.
Bake for 30 minutes and top with the googly eyes.