Honey (Best Option)
1 tablespoon honey per 1 tablespoon maple syrupHoney works well because it has a comparable sweetness intensity and thickness to maple syrup, which helps maintain the sauce's balance between acidity and sweetness. The natural sugars in honey also caramelize slightly during cooking, enhancing the sauce's depth.
For best results, use mild-flavored honey to avoid overpowering the tomato base. Stir well to ensure even distribution and avoid localized sweetness. Monitor cooking time as honey can brown faster than maple syrup.
Compared to maple syrup, honey may impart a slightly different aroma but will preserve the intended mouthfeel and sweetness, making it the closest functional substitute in tomato sauce.