Preheat oven to 375°F (190°C) and grease a standard 6-cup muffin tin.
In a large mixing bowl, combine the drained tuna, beaten eggs, and cottage cheese until well incorporated.
Fold in the shredded cheddar cheese, almond flour, green onions, garlic powder, salt, and pepper.
Distribute the mixture evenly among the 6 prepared muffin cups, pressing down slightly to pack them.
Bake for 20 minutes or until the tops are golden brown and the centers are set.
Allow to cool in the tin for 5 minutes before removing to prevent crumbling.