Green lentils are an extremely underrated pulse. Despite what people say, lentils are very easy to cook. Here is one of the quickest and easiest ways I have found.

Green Lentils, Onion and Mushrooms

About 100g of green lentils
Half a large onion, chopped
4 button mushrooms, chopped
1 tbsp of curry powder
Water
Green vegetables, e.g. spinach, optional

1) with a bit of oil, gently fry (in a largeish pan) the onions until browned
2) add your mushrooms, cook for a couple more minutes
3) add the lentils and spread across the pan, cook for a few minutes
4) add curry powder for taste, mix
5) add enough water to just about cover all the lentils and ingredients
6) add your green vegetables if you want then, or leave till later
7) cover on low-medium heat for approx 30-40 minutes