The best veggie meatballs on rye - with olive tapenade and snack veg

Ingredients

• 1 onion
• 1 clove garlic
• 200 grams red lentils
• 100 grams carrots*
• 100 grams potatoes
• 1 cube vegetable stock
• 1 tsp salt
• 1 egg
• 4 tbsp plain flour
• 8 slice wholewheat bread
• 0.5 cucumber
• 1 red bell pepper
• olive tapenade
• salt
• pepper
• butter
• olive oil