2.5 lbs ripe Roma tomatoes
1 head garlic
1 tbsp olive oil
1 medium-sized yellow onion, diced
1 14 oz can diced tomatoes
1/2 cup chicken broth
1 tsp salt
1/2 tsp freshly ground black pepper
1 tsp granulated sugar
1/4 tsp crushed red pepper flakes
1/4 tsp cayenne pepper
2 tbsp chopped fresh basil, plus more for garnish
1/2 cup heavy cream
4 oz. Asiago cheese, sliced
2 tbsp julienned basil, for garnish