In a large mixing bowl, stir together the flour, baking powder, baking soda, and cinnamon.
Add milk and spinach to a blender and mix well, breaking down the spinach as much as you can; stir into the dry ingredients.
Spray skillet with cooking spray and heat over medium.
Pour batter by 1/4 cup-fulls onto the hot skillet and cook 2-3 minutes until bubbles form.
Flip pancakes and cook an additional 2 minutes until golden; repeat until all batter has been used.
Use a heart-shaped cookie cutter to cut each pancake. Arrange onto plates into clovers, using 3 hearts for the leaves and a part of the leftover pancakes as the stem.
Spread with butter and drizzle with maple syrup; serve with sliced strawberries on the side.