01 - In a medium mixing bowl, whisk together the eggs, milk, salt, and black pepper until fully blended.
02 - Heat olive oil in a large nonstick skillet over medium heat. Add diced red onion and bell pepper, stirring for 2 to 3 minutes until softened.
03 - Add chopped spinach to the skillet and cook for 1 minute until wilted.
04 - Reduce the heat to low. Pour in the egg mixture and gently scramble, stirring frequently, until the eggs are softly set, about 3 minutes.
05 - Add chopped turkey or chicken and black beans to the eggs in the skillet. Cook for 1 minute to heat through.
06 - Sprinkle shredded cheddar cheese over the mixture. Stir gently until the cheese is melted and evenly distributed.
07 - Warm the whole wheat tortillas in a dry skillet or microwave for 15 seconds to make them pliable.
08 - Divide the filling evenly between the tortillas. Fold in the sides and roll up tightly to form burritos.
09 - Serve immediately, accompanied by salsa if desired.