Heat it Up: Get your waffle iron preheated to a medium setting. Give both plates a good spray with non-stick cooking spray so nothing sticks!
Mix the Dry: In a medium-sized bowl, combine your protein powder, baking powder, and salt. Whisk them together briefly.
Add Wet & Stir: Now, crack in your egg and add the sour cream or Greek yogurt to the dry mixture. Stir everything gently until you have a smooth, well-combined batter. No need to let it sit!
Waffle Time: Carefully pour the batter into the center of your hot waffle iron, filling about three-quarters of the bottom plate. Close the lid and let it cook until it's golden brown and crispy. Many waffle makers have a light that tells you when it's ready!
Serve & Enjoy: Once perfectly cooked, gently remove your delicious waffle and serve it immediately with your favorite healthy toppings.