McDonald's Sausage McMuffin with Egg is the other McMuffin to McDonald's Egg McMuffin (which has ham instead of sausage; why isn't it the Ham McMuffin then...?). Inside the the English muffin, you'll find a sausage patty, a slice of American cheese, and a fried egg.
Southern California McDonald's is currently doing a promotion where you can score two of Sausage McMuffins with Egg for $3.79. I would point out that the Sausage McMuffin without egg is only $1.
For some reason, I've noticed that the cheese is melted better in McDonald's breakfast items than their regular items. It suggests that breakfast at McDonald's is usually hotter and therefore fresher than the rest of the day. I could be wrong though. My Sausage McMuffin with Egg was plenty hot though. I actually had to blow on it a bit to cool it down.
Egg, sausage, and cheese is arguably the standard for fast food breakfast and McDonald's version doesn't disturb that with any surprises. That's not necessarily a bad thing.
For the egg, while McDonald's also offers scrambled eggs on some of their other breakfast sandwiches, the McMuffin sandwiches come with a griddle-fried egg cracked into a metal ring to give a patty-like shape. It's fried, but also steamed a little. They break the yolk so that it cooks through as well. The result is a bit like a non-quite hard-boiled egg that is still nonetheless cooked through. The solid shape makes it easy to eat on the go since it won't run onto your hand or anything like that. More importantly, the egg serves as a nice buffer to the salt of the sausage.
I don't usually think of it, but McDonald's English muffins are actually pretty good. It toasts nicely, has a decent chew, and a nice crust.
Overall, I like the Sausage McMuffin with Egg quite a bit. It's standard, but still very good. Where I usually opt for bacon at other fast food chains, sausage at McDonald's is a good step above and a worthy choice.
Nutritional Info - McDonald's Sausage McMuffin with Egg - 5.8 oz (164g)
Calories - 450 (from Fat - 250)
Fat - 27g (Saturated Fat - 10g)
Sodium - 920mg
Carbs - 30g (Sugar - 2g)
Protein - 21g