Ingredients

• 1 lb. grass-fed sirloin steak, cut in 2 – 3 inch cubes
• 2 tablespoons balsamic vinegar
• 1 tablespoon worcestershire sauce
• 1 tablespoon tamari (or soy sauce)
• 1/4 cup extra virgin olive oil
• 1 tablespoon whole grain mustard
• 1/2 teaspoon garlic powder
• 1/2 teaspoon onion powder
• 1/2 teaspoon ground black pepper
• 1/2 teaspoon dried basil
• 1/2 teaspoon oregano
• 1/2 teaspoon thyme
• 2 bell peppers (I used 1 red and 1 orange), cut in 2 – 3 inch chunks
• 1 red onion, cut in 2 inch chunks
• 1 tablespoon olive oil, for tossing the veggies
• wooden skewers