Heat a large skillet to medium - medium high heat. Add 1 tbsp coconut oil to the pan to coat, or use butter.
In a medium size bowl, mix together dry ingredients: flours, baking soda, collagen, cinnamon, and kosher salt.
In a small bowl, mash the banana with a fork.
In another bowl, whisk together eggs, milk, apple cider vinegar, 2 tbsp coconut oil, vanilla, and mashed banana. Combine all ingredients until smooth. Add wet ingredients to dry and continue to mix until well combined. Batter will be thick.
Spoon batter onto pan to and shape into 3-4 inch diameter discs or circles. Cook for approximately 2 minutes per side, or until golden brown and cooked through. You may need to continue adding more coconut oil to pan, after each batch of pancakes.
Top with fresh strawberries and a drizzle of maple syrup (optional).