1Preheat oven to 350 degrees F (175 degrees C). Grease a 13x9-inch baking dish.
2Mix oats, sunflower seeds, coconut, brown sugar, cinnamon, and sea salt together in a large bowl.
3Stir yogurt, peanut butter, maple syrup, coconut oil, and vanilla extract together in a separate bowl until smooth; add to oats mixture and stir to coat. Mix protein powder and chocolate into the resulting mixture; spread into prepared baking dish.
4Bake in preheated oven until browned, about 15 minutes.
Footnotes
Cook's Note:
The bars will be chewy after cooling. To make bars crunchy, cut into bars, arrange on a baking sheet, and bake for an additional 15 minutes.