Prepare the potato crust using shredded russet potatoes, olive oil, salt, garlic powder, and pepper
Mix eggs and whole milk together in a bowl
Combine the egg mixture with cottage cheese if using
Layer the filling ingredients including diced bacon, spinach, red bell pepper, yellow onion, and cheddar cheese into the potato crust
Pour the egg and milk mixture over the filling
Bake until set and golden
Garnish with green onion before serving
