Place the almonds in a single layer in a pie pan and place in oven. Heat the oven to 375 degrees F. Bake the nuts until lightly toasted, approximately 20 minutes while the oven heats. Meanwhile, spray a standard 12-cup muffin tin with the nonstick spray and set aside.
Whisk the eggs, yogurt, vegetable oil, and sugar in a large mixing bowl until combined. Add the flour mixture and parsnips, and fold with a spatula until all of the flour is moistened, there will be some lumps. Divide the mixture evenly among the muffin cups using a level 2 1/2-ounce disher or 1/3 cup measure. Sprinkle the top of each muffin with the toasted almonds. Bake for 20 to 25 minutes or until the muffins reach an internal temperature of 210 degrees F and are golden brown, rotating halfway through baking. If needed, use a small knife or offset spatula to loosen the muffins and immediately remove them from the tin to a cooling rack, and cool for 15 minutes. Serve warm. Store completely cooled muffins in an airtight container for up to 3 days.