Melt butter in skillet over medium-high heat. Add onions and peppers; cook 2-3 minutes or until vegetables are crisp-tender, stirring occasionally.
Meanwhile, in medium bowl, combine eggs, milk, salt and pepper; beat well.
Pour egg mixture over vegetables in skillet. Reduce heat to medium; cook 4-6 minutes or until eggs are set but still moist, stirring frequently.
To serve, spoon egg mixture onto warm tortillas; sprinkle with cheese. Roll up.
Nutrition Info Per Serving: Calories 356.3 Total Fat 18.0 g Saturated Fat 7.6 g Polyunsaturated Fat 2.1 g Monounsaturated Fat 5.3 g Cholesterol 299.1 mg Sodium 728.1 mg Potassium 191.2 mg Total Carbohydrate 32.6 g Dietary Fiber 2.4 g Sugars 3.1 g Protein 17.4 g