Super quick, healthy, and absolutely delicious. I use an Enterprise apple.
Step: 1
Spread mustard onto cut-sides of onion roll halves. Top one half with apple slices and cheese; sandwich with remaining half.
Per Serving: 289 calories; protein 13g; carbohydrates 33.1g; fat 11.1g; cholesterol 25.2mg; sodium 777.3mg.