Ground beef filling: Heat the oil over
medium high heat. Add the ground meat and press down to sear. Stir to break apart and let it fully cook while it develops some browning. Once cooked and in the diced tomato and seasonings mix. Stir until evenly distributed. Pour in the broth, mixed veggies and stir to combine. Lower the heat to medium and allow it to simmer until almost all of the liquid has reduced and the meat is nice and moist. Lastly, season with salt and
black pepper to taste. Mix to combine, remove from the heat and reserve.