Prepare the grill or barbeque by allow to preheat for 5 minutes. You can also use your oven.
Grill the peppers and transfer them to a covered bowl and let them aside to cool down.
Peel of the skin, cores and seeds from the peppers.
Pierce the skin of eggplant with a fork in few places to prevent smashing all over due to the heat. Grill the eggplant until its skin darkens and rotate it from all sides.
Transfer the eggplant to a plate and let it cool then split lengthwise, remove the top off eggplant and peel of the skin and remove seeds inside with a spoon.
Use a food processor to roughly chopped the roasted red peppers, eggplant, and garlic.
Then add in vinegar and oil, and season with salt and continue pulsing until the peppers are finely chopped.
Place a saucepan over medium-high heat then transfer the content from the food processor and reduce to medium-low and simmer for 30 minutes. Don't forget to check and stir from time to time to be sure doesn't stick.
When ready turn off the heat and season with salt and pepper to taste.
Serve with bread.