Preheat the oven to 350 degrees.
Clean and chop the vegetables as stated.
Heat the cooking oil in a skillet.
Add the onions and the garlic, and sauté until translucent and golden, about 10 minutes.
Add parsley and thyme, and cook until parsley is soft. Remove from the heat.
Combine breadcrumbs, ground beef, eggs, diced tomatoes, and salt in a mixing bowl.
Add the vegetable mix on top.
Using your hands, mix well until combined.
Divide the mixture into two and transfer both halves to separate loaf pans. Press well to fit.
Bake for between 60-90 minutes.
Once the meatloaves have cooled, cut them into slices and serve.