Tuna, Watercress, Asparagus and Onions

Ingredients

• 2 x 120g John West No Drain Tuna Steaks with a little olive oil
• 2 tsp extra virgin olive oil
• 1 onion, peeled and thinly sliced into rings
• 4 medium sized eggs
• 2 heads baby little gem lettuce, stalk removed
• 50g fresh watercress
• 1 bunch asparagus, trimmed and cooked
• For the dressing
• 1 tbsp Dijon mustard
• 2 tbsp red wine vinegar
• 8 tbsp extra virgin olive oil