Beef Wellington Turnover

Ingredients:

For the Filling:

  • 1 pound beef tenderloin, trimmed
  • Salt and black pepper to taste
  • 2 tablespoons olive oil
  • 1 cup finely chopped mushrooms (such as cremini or button mushrooms)
  • 2 cloves garlic, minced
  • 1 tablespoon fresh thyme, chopped
  • 2 tablespoons Dijon mustard
  • 1/2 cup pâté (optional)