Cook lentils in 3 cups of water and bring to a boil, add salt and cook for 25-30 minutes. Lentils should still be quite firm to the bite for this salad.
Meanwhile shell broad beans and steam them for 5-7 minutes. Cool slightly and peel the outer skin off.
In a jam jar combine honey, red wine vinegar, olive oil and minced mint, thyme and garlic.
Add salt and pepper, put a lid on and shake until the mixture is emulsified, then add sliced red onions and set aside. This step with allow onions to marinate slightly and lose their bitterness.
Drain cooked lentils, add broad beans and vinaigrette and toss lightly with honey vinaigrette while lentils are still hot. That would help them absorb more flavour.
Cool in the fridge.
Before serving combine with spinach, feta and mint leaves.