Melt 2 tablespoons butter in large skillet on medium heat. Add peppers and onion. Cook and stir 4 to 5 minutes or until onions are tender. Stir Seasoning Mix and water into skillet. Simmer 2 minutes or until sauce is slightly thickened. Remove pepper and onion mixture from skillet and keep warm.
Mix eggs and milk in medium bowl with wire whisk until well blended. Melt remaining 2 tablespoons butter in same skillet on medium heat. Add egg mixture; cook and stir 3 to 4 minutes or until eggs are firm.
Spoon egg mixture into warmed tortillas. Layer with pepper and onion mixture and add additional fillings such as cooked sausage, cheese or salsa, if desired. Fold each into a burrito.
Wrap prepared burritos in plastic wrap and store in freezer. To reheat, remove burrito from plastic wrap. Place on microwavable plate and cover with damp paper towel. Microwave 3 minutes on MEDIUM then 3 minutes on HIGH. Let stand 1 minute before serving.