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🍽️ Juicy Beef Sandwiches with Sweet-Sour Onions

664 kcal · 30 min · 4 servings

Ingredients

• 5 red onions
• 4 tbsp olive oil
• 1 tsp mustard seeds
• 50 ml red wine
• 3 tbsp balsamic vinegar
• salt
• pepper (from the mill)
• 2 tomatoes
• 4 leaves leaf lettuce (e.g. Lollo Rosso)
• 4 slices beef steak approx. 120 g (e.g. ribeye)
• 8 slices white bread

Instructions

1. 1. Peel the onions and slice them into thin rings.
2. 2. Heat two tablespoons of oil in a pan over medium heat.
3. 3. Add the onion rings to the pan and sauté them slowly for 4 to 5 minutes until they are soft and translucent.
4. 4. Sprinkle the mustard seeds over the onions.
5. 5. Deglaze the pan by pouring in the red wine and stirring briefly.
6. 6. Add the balsamic vinegar.
7. 7. Let the mixture simmer gently for about 10 minutes over low heat.
8. 8. If the pan becomes too dry, add a little water.
9. 9. Season the onions with salt and pepper to finish.
10. 10. Wash the tomatoes and remove the hard stem area.
11. 11. Slice the tomatoes into even slices.
12. 12. Wash the leaf salad and shake it dry thoroughly.
13. 13. Tear the salad into bite-sized pieces if it is too large.
14. 14. Pat the beef steaks dry with a kitchen towel.
15. 15. Season the steaks with salt and pepper.
16. 16. Fry the steaks in the remaining hot oil for 1 to 2 minutes per side.
17. 17. Adjust the cooking time according to your personal preference (shorter for rare, longer for well-done).
18. 18. Take four slices of bread and top them with the leaf salad.
19. 19. Place the tomato slices on top of the salad.
20. 20. Place the fried beef steaks on top of the tomatoes.
21. 21. Distribute the caramelized onions evenly over the steaks.
22. 22. Cover the sandwiches with the remaining bread slices.

Nutrition per serving

• kcal: 664
• Protein: 54 g · Fett/Fat: 24 g · Carbs: 55 g