Put everything into the blender except for the bread. This is important to incorporate the nutritional yeast properly. Blitz for 15 seconds, taste to see if you'd like more sugar in, then pour into a shallow container large enough for a slice of bread to fit into
Dredge the slices of bread in the mixture on both sides
Place in a buttered frying pan or under the grill on medium heat
Toast, turning once until both sides are lightly browned
Serve with fruit and dust with more powdered sugar / cinnamon if preferred. Maple syrup, cream, even make a sandwich with vegan cheese and bacon, yum!