Philly Cheesesteak Burritos

Partially freeze meat. Thinly slice across the grain into bite-size strips.

Meanwhile, prepare cheese sauce. In a small saucepan, combine flour and dry mustard. Gradually add milk, stirring with a whisk until blended. Cook and stir until mixture comes to boiling; reduce heat. Cook and stir 1 minute or until slightly thickened. Gradually add cheeses, stirring until smooth. Remove from heat; cover and keep warm. The mixture will thicken as it cools.

In an extra-large skillet, heat oil over medium-high heat. Add half of the meat; cook and stir about 3 minutes or until slightly pink in center. Remove with a slotted spoon. Repeat with remaining meat; remove. Add mushrooms, onion, half of the red pepper strips and half of the yellow pepper strips to skillet; cook and stir about 4 minutes or just until tender. Return all of the meat to skillet. Season mixture with hot pepper sauce.

To assemble, spoon about 1 1/4 cups of the meat mixture onto each tortilla. Top with about 2 tablespoons of the cheese sauce. Fold bottom edge of tortilla up and over filling. Fold one opposite side in; roll up from the bottom. If necessary, secure with toothpicks. Serve with remaining sweet pepper strips on the side.