01 -
In a medium saucepan over medium heat, warm the bacon drippings or butter. Add the diced onion and cook until translucent, about 5 minutes.
02 -
Sprinkle flour over the onions and stir constantly for 2–3 minutes to form a smooth roux.
03 -
Gradually stir in the diced tomatoes with juice, crushed tomatoes, and chicken broth until fully combined.
04 -
Incorporate light brown sugar, salt, and freshly ground black pepper, stirring until dissolved.
05 -
Bring to a gentle simmer and cook for 20 minutes over low heat, stirring occasionally.
06 -
Pour in the half-and-half or heavy cream and cook for an additional 3–5 minutes, stirring to blend thoroughly.
07 -
Remove from heat. Optionally blend with an immersion blender for a smoother consistency. Garnish with fresh basil and serve hot.