Preheat oven to 400 ℉. Pour ¼ cup evoo in a half sheet pan (or a sheet pan that fits in your oven). Place pan in oven for ten minutes until evoo is hot.
In a medium bowl, combine grated potatoes, onions, egg, flour, salt and pepper. Mix well.
Remove hot pan from oven and scoop out ⅛ cup batter onto baking pan to make about 8 latkes.
Place in oven and “fry” for 6 minutes or until edges are golden brown. Remove pan from oven, use a spatula to flip the latkes and cook an additional 4-6 minutes. Serve hot.