01 - In a mixing bowl, whisk together eggs, low-fat milk, salt, and black pepper until well blended.
02 - Heat olive oil in a medium skillet over medium heat. Add diced red onion and bell pepper. Sauté for 2 to 3 minutes until vegetables are softened.
03 - Stir in chopped spinach and cook for 1 minute until just wilted.
04 - Lower the heat to medium-low. Pour in the egg mixture. Gently scramble, stirring continually, until eggs are softly set, about 3 minutes.
05 - Add chopped turkey or chicken and black beans to the skillet. Cook for 1 additional minute to heat through.
06 - Sprinkle shredded cheddar cheese over the filling and stir gently until melted and well combined.
07 - Briefly warm the whole wheat tortillas in a dry skillet or microwave for 15 seconds until pliable.
08 - Evenly divide the cooked filling between the tortillas. Fold in the sides and roll up tightly to enclose the filling.
09 - Serve immediately with salsa if desired.