Position an oven rack in the second-highest position and preheat the broiler.
Place the English muffin halves on a baking sheet, cut-side up. Broil until lightly golden and crispy, about 1 to 2 minutes.
Remove the toasted muffins from the oven and immediately rub the cut side of the peeled garlic clove all over the warm surface to infuse it with flavor.
Spread 1 Tbsp / 15 ml of Yogurt Cheese over each muffin half. Evenly divide the zucchini slices among the muffins, then top with tomato slices and red onion.
Season generously with sea salt and freshly ground black pepper.
Return the pizzas to the broiler and cook until the toppings are warmed through and the onions are just beginning to brown, about 3 to 4 minutes.
Keep a close eye on them to prevent burning!
Remove from the oven.
Drizzle each mini pizza with ½ tsp / 2. 5 ml (0.2 fl oz) of olive oil and finish with a generous sprinkle of nutritional yeast before serving.
Don't skip the nutritional yeast! It adds a wonderful cheesy, savory flavor that perfectly mimics Parmesan cheese and boosts the B-vitamins.