This Italian marinara sauce is an iconic Sicilian marinara and a generational recipe that continues even today. This recipe, combined with quality ingredients, love, and time, is one of the best you'll find and certainly worth saving and sharing.
Melt the butter and the olive oil in a large, heavy-bottomed saucepan over low heat. Add the garlic and onions, salt generously, and saute over medium heat for about 7 – 8 minutes. Cook and stir until the onion rings begin to lose their shape. They will be soft and translucent.
When simmering, reduce the heat and maintain a slow simmer for about two hours, stirring frequently. Add the sugar, paste, and Italian herbs (if using dried herbs, add now, if using fresh basil, add about 10 minutes before blending). Stir well, and continue to simmer for about another hour.