Preheat your oven to 350°F. Grease a muffin tray with cooking spray or use muffin liners.
Heat olive oil in a large skillet over medium heat. Add the chopped kale and diced mushrooms. Sauté for about 5 minutes, or until the vegetables have softened. Season with garlic powder, and a pinch of salt and pepper. Remove from heat and let them cool.
In a large mixing bowl, whisk together the eggs and cottage cheese until well combined.
Add the sautéed mushroom kale mixture to the egg mixture and stir until the vegetables are evenly distributed.
Pour egg mixture into the greased muffin tin, filling each cup about two-thirds full. Top with cheese.
Place the muffin tin in the preheated oven and bake for about 20-25 minutes, or until the egg bites are set and slightly golden on top.
Allow the egg bites to cool for a few minutes before using a small spoon or silicone knife to gently loosen the edges. Remove them from the muffin tin.