Remove veggies from oven. Leaving vegetables on cookie sheet use a spatula to divide veggies into three equal sections. Place 1/3 third of the veggies into a blender, add two cups broth, half the can of roasted tomatoes and half of one roasted red pepper. Blend till not quite smooth. Pour into stock pot. Repeat (excluding the red bell pepper) with another 1/3 of vegetables, tomatoes and broth. After blending second batch, add to pot. Place the last 1/3 of veggies on a cutting board and use a knife to dice. Add the diced vegetables to blended soup in the pot and heat till warm. If soup is too thick, use reserved broth to thin to desired consistency (a half cup at a time). Add Cayenne pepper and 2-3 tablespoons balsamic vinegar, tasting after each addition. Salt and pepper to taste if needed, serve.