01 -
Preheat a large skillet over medium heat. Add breakfast sausage and cook, breaking it into crumbles, until thoroughly browned. Drain excess fat.
02 -
Preheat oven to 175°C. Lightly grease a 23 x 33 cm baking dish. Arrange frozen potato puffs in an even layer over the base.
03 -
In a large bowl, whisk together eggs, milk, garlic powder, onion powder, salt, black pepper, and crushed red pepper flakes until smooth and fully combined.
04 -
Scatter cooked sausage over potato puffs. Pour egg mixture evenly across the dish. Top with shredded cheddar and mozzarella, distributing cheeses uniformly.
05 -
Transfer baking dish to oven. Bake for 30 to 40 minutes, until eggs are firm and cheese is golden brown. A toothpick inserted in the center should come out clean.
06 -
Remove dish from the oven and let stand for several minutes. Sprinkle chopped green onions over the top before serving, if desired.