I didn't have a reason to buy a whole rotisserie chicken
There's no heirloom tomatoes in these parts for probably two more months
There's no basil, either - I even managed to run out of dried!
So what I did was cook the onions, then sauteed some boneless chicken breast (cut up small) in olive oil. To that, I added a can of basil-and-garlic diced tomatoes, added the onions back in with some chicken broth (I didn't have any white wine, either - shocking, I realize), let it all simmer for a bit. Since this obviously wasn't going to be any kind of salad, I added the spinach to the sauce, stirred in some big chunks of goat cheese, and voila.