Italian-style pasta with roasted eggplant and crispy garlic

We tried this recipe from Aida Mollenkamp: http://saltandwind.com/recipes/38-late-summer-roasted-eggplant-pasta-recipe. Our modifications: to avoid having unused ingredients, we increased the spaghetti to 1 lb (16 oz), tomato purée to 20 oz, balsamic vinegar to 1 ½ Tbsp, and sugar (we used white sugar) to 1 ½ tsp. We also used a mix of fresh thyme and fresh marjoram (in lieu of oregano) to season the eggplant. (Apr. 2016)