Preheat oven to 400 degrees F.
In a large pan, add olive oil over medium-high heat.
Add onions and garlic. Cook until the onions are brown. Stir frequently.
Add sweet potato and turnip. Cook for about 5 minutes.
Add zucchini, diced tomato, and tomato sauce.
Cook until veggies are tender. If necessary, add water to help to cook the veggies.
Spread vegetable mixture evenly in the greased baking dish (casserole dish).
With the back of a large spoon, make three indentations in the veggies mixture.
Crack 1 large egg into each indentation, keeping the yolk intact.
Season eggs with salt and pepper.
Bake for about 15-20 minutes or until the eggs whites are set.
Remove from oven and garnish with green onions