You really need to give this a go – super versatile!
Gently and slowly sauté one large brown onion in olive oil with cracked black pepper till brown and sweet
Add fresh or tinned tomatoes (about 500 grams) with fresh oregano and thyme and some chilli if you want heat
Cook down slowly with a splash of lemon juice
Keep it really thick and add a teaspoon of honey if you want some subtle sweetness
Blend till smooth … Yum!
You could freeze in small batches and cook with meatballs or fish or add to sauces
Healthy Cooking for Beginners - Heal Yourself With Food 
mmmmm this sauce is really good, i am going to eat it tonight with my tuna steak.
Had this tonight with beef meatballs and a side of stripped courgette fried in olive oil and a drizzle of lemon and pepper. Was so so yummy. Thank you for sharing