01 - Whisk together eggs, milk, salt, and pepper in a medium bowl until well combined.
02 - Cook bacon in a large non-stick skillet over medium heat until crispy. Transfer to a paper towel-lined plate, crumble once cooled, and wipe excess fat from skillet leaving about 1 teaspoon.
03 - Add bell pepper to skillet and sauté for 2 minutes until slightly softened. Add spinach and cook for 1 minute until wilted.
04 - Reduce heat to low. Add butter to skillet, then pour in egg mixture. Let sit for 30 seconds, then gently stir with spatula.
05 - When eggs are softly set but still slightly runny, sprinkle in cheddar cheese, crumbled bacon, and green onions. Gently fold until cheese melts and eggs are just cooked through.
06 - Serve immediately, garnished with extra green onions if desired.