Peel the onion and garlic clove and cut into small cubes.
Wash the vegetables under water and cut into coarse pieces. Either chop them with the help of a food processor or chop them into small pieces yourself with a knife.
First, sauté the onion and garlic pieces in a saucepan in a little oil. Then add the finely chopped vegetables. If you like you can also add a handful of herbs. I washed some parsley and basil and added it. Sauté everything briefly.
Rinse the red lentils under water and add them to the pot as well. Add the strained tomatoes, 6.8 fl. oz. (200 ml) of water and 2 tablespoons of tomato paste.
Now let everything simmer for about 15–20 min (until the lentils have absorbed the liquid well). Stir regularly.
While the Bolognese is simmering, you can cook the spaghetti in salted water and roast the pine nuts in a pan.
Now season the Bolognese well. Drain the spaghetti and serve on a plate with the Bolognese. Top with the roasted pine nuts. Done!