Pepper Crusted Steak

Ingredients

• 1 yellow onion, (chopped)
• 1 tablespoon butter
• 2 cloves garlic, (minced)
• 1 cup ketchup ((tomato sauce))
• 1 lemon, (juiced)
• 1/4 cup Worcestershire sauce
• 1/4 cup balsamic vinegar
• 1/4 cup water
• 2 tablespoons tamari
• 2 tablespoons dark brown sugar
• 1 tablespoon Dijon mustard
• 1/4 teaspoon cayenne pepper
• salt
• pepper
• 1 steak ((teres major, beef tenderloin, or similar))
• 2 tablespoons olive oil
• 1 tablespoon cracked black pepper
• 1/2 teaspoon kosher salt