Heat the extra virgin olive oil in a small skillet over medium heat.
Add the diced red onion and halved cherry tomatoes to the skillet, sautéing for about 5 minutes until the tomatoes soften and begin to blister.
Stir in the dried oregano, sea salt, and black pepper, then remove the skillet from the heat and set aside.
Fill a medium saucepan with water and add the apple cider vinegar, bringing it to a very gentle simmer over medium-low heat.
Crack each egg individually into a small ramekin or bowl, then carefully slide them into the simmering water.
Poach the eggs for approximately 3 minutes until the whites are fully set but the yolks remain liquid.
While the eggs poach, toast the sprouted grain bread until golden and spread the mashed avocado evenly across both slices.
Spoon the warm herbed tomato and onion mixture over the avocado toast.
Use a slotted spoon to carefully lift the poached eggs from the water, blot them gently on a paper towel, and place them on top of the tomatoes.
Garnish with freshly chopped parsley and serve immediately.