Preheat your oven to 400°F (200°C).
In a small oven-safe skillet or ceramic baking dish, combine the cherry tomatoes, minced garlic, olive oil, sea salt, black pepper, and dried oregano.
Roast the tomato mixture in the oven for 10 to 12 minutes until the tomato skins begin to blister and burst.
Remove the skillet from the oven and add the baby spinach, stirring gently until the leaves are slightly wilted from the residual heat.
Pour the liquid egg whites evenly over the vegetable base, then carefully crack the three whole eggs on top, keeping the yolks intact.
Sprinkle the crumbled feta cheese around the eggs and return the skillet to the oven.
Bake for 8 to 10 minutes, or until the egg whites are fully opaque and set, but the yolks are still soft and runny.
While the eggs finish baking, toast the slice of sprouted grain bread until golden brown.
Remove the skillet from the oven and serve immediately alongside the toasted bread for dipping into the warm yolks.