Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
  1       pound         boneless top sirloin steak, trimmed of fat 
  3       Tablespoons   canola oil 
  1 1/2   Tablespoon    red wine vinegar 
  1       teaspoon      minced garlic 
    1/2   teaspoon      dried thyme 
  1       teaspoon      dry mustard 
    1/4   teaspoon      salt 
    1/4   teaspoon      pepper 
  2       medium        sweet bell red or green peppers, seeded 
  2       medium        sweet onions 

Preparation:

1. Cut beef into 1" cubes. Mix oil, vinegar, garlic, herbs and seasonings together in a glass dish. Stir in beef cubes, coating all surfaces with mixture, cover and marinate in refrigerator for several hours (2-12).

2. Cut peppers into 1" cubes; cut onions into small wedges.

3. Alternate beef and vegetables on 4 skewers, leaving a small space between pieces of food. Liberally brush each kebab with marinade and then discard marinade. Grill kebabs over medium coals about 4" from heat source.

4. Grill for 8-10 minutes turning skewers every 2-3 minutes. Or cook in a preheated broiler, 4" from heat.

5. Cook until beef is cooked through and vegetables are tender.