Garlic Butter Steak Kabobs

Ingredients

• 1/2 teaspoon black pepper
• 2 teaspoons olive oil
• 3 tablespoons butter
• 4 tablespoons soy sauce
• 4 tablespoons Worcestershire sauce
• 1 cup mushrooms, halved
• 1/2 teaspoon salt
• 1 green bell pepper, cut into 1-inch pieces
• 1 red onion, cut into 1-inch pieces
• 1 teaspoon minced garlic
• 1 pound beef sirloin, cut into 1-inch cubes
• 1 tablespoon chopped parsley