McDonald’s is turning up the heat on breakfast and tapping into nostalgia as it celebrates the 50th anniversary of the McMuffin. The fast food giant has introduced three limited-time spicy versions of the classic breakfast sandwich at participating locations across the United States. These spicy offerings include the Spicy McMuffin, the Spicy Sausage McMuffin, and the Spicy Sausage McMuffin with Egg, each featuring a specially crafted spicy pepper sauce. The sauce adds a bold kick to th