Cut beef steak into 1-inch pieces.
Whisk together oil, lemon juice, water, mustard, honey, oregano and pepper in large bowl; add beef, bell pepper and mushrooms, stirring to coat.
Alternately thread pieces of beef, bell pepper and mushrooms on each of four 12-inch skewers.
Place kabobs on rack in broiler pan so surface of meat is 3 to 4-inches from heat. Broil 9 to 12 minutes for rare to medium, turning occasionally. Season with salt, if desired.
Servings: 4