In a saucepan, heat olive oil over medium heat. Add garlic and saute until fragrant, about 1 minute. Stir in remaining sauce ingredients and reduce heat to medium-low. Cover and allow sauce to simmer while preparing the burgers.
In a large bowl, stir together the meatball ingredients until evenly combined. Form into 8 separate burger patties.
Heat a large non-stick skillet to medium. Place burger patties in the skillet and saute for 5 -6 minutes per side. In the last two minutes of cooking, top patties with slices or shreds of dairy free mozzarella.
To assemble the burgers, add a portion of to the bottom of each bun. Top with a burger patties, another layer of sauce and bun tops.