Tenderloin Daging Sapi Panggang dengan Bawang Perancis Au Jus

Bahan-bahan (6 porsi)

• 1 (4-5 pound) whole beef tenderloin
• 2 cloves garlic, minced or grated
• 2 tablespoons chopped fresh thyme
• 1/4 cup peppercorns crushed, or fresh black pepper ((I use pink peppercorns))
• kosher salt
• 2 tablespoons butter
• 4 large sweet onions, thinly sliced
• 6 tablespoons butter
• 1 1/2 cups red wine
• 1 cup low sodium beef broth
• 1 tablespoon worchestire sauce
• 4 sprigs fresh thyme