01 - In a medium mixing bowl, whisk together eggs, milk, salt, and pepper until well blended.
02 - Heat olive oil in a medium nonstick skillet over medium heat. Add diced red onion and bell pepper. Sauté for 2 to 3 minutes until vegetables are softened.
03 - Add chopped spinach to the skillet and cook for 1 minute until just wilted.
04 - Reduce heat to low and pour in the egg mixture. Gently scramble until eggs are softly set, about 3 minutes.
05 - Add chopped turkey or chicken and black beans. Stir and cook for 1 minute until thoroughly heated.
06 - Sprinkle shredded cheddar cheese over the filling and stir until cheese is melted and combined.
07 - Warm tortillas in a dry pan or microwave for 15 seconds until pliable.
08 - Divide the filling equally between the tortillas. Fold in the sides, then roll up tightly to form burritos.
09 - Slice and serve immediately with salsa on the side, if desired.