Pan-fried Rump steak with Rosemary and Garlic Paste

Ingredients

• 2 200 or 500g rump steaks
• Salt and freshly ground black pepper, to season
• 2 tbsp butter, softened
• 1 tbsp finely chopped fresh rosemary
• 1 tsp lemon zest
• 1 tbsp lemon juice
• 1 tbsp balsamic vinegar
• 1 tbsp olive oil
• 3 large cloves garlic, peeled and chopped