Start with the meatballs. Boil the lentils till it becomes soft but not mushy.
Put a pan on the heat, add 1 teaspoon of olive oil, add roughly chopped onions and garlic and cook until it turns light brown.
In a food processor add oats and almonds and blend until the almonds are finely chopped and oats become flour.
Next add boiled lentils, cooked onion and garlic, flax eggs, tomato puree, dried herbs, chilli flakes, salt and pepper.
Blend until everything is mixed properly, do not over mix as we need a little texture in the meatballs
Preheat the air fryer at 350 degrees F.
Now take a teaspoon of the prepared mixture and shape it into a ball. Repeat with the rest of the mixture.
Brush some olive oil on an air fryer tray and arrange the balls, brush some oil on top and cook for 5 minutes. Turn over the balls and cook for another 5 minutes until it becomes light brown in colour. Repeat with the rest of the prepared balls.
Next to make the marinara sauce put the pan on heat add 1 teaspoon olive oil and add finely chopped onion and garlic, stir for a few seconds, once it turns light brown add the tomato puree and rest of the ingredients. Cook it for 10 minutes until the sauce thickens and absorbs all the flavours. (You can blend the sauce if wanted a smooth consistency)
Add the meatballs and switch off the flame (do not cook the meatballs in sauce, it just needed to be coated with sauce)
Serve hot over boiled spaghetti.