Step 1Cook pasta according to package directions and drain well. Transfer to large bowl, add butter and blend well. Set aside.
Step 2Heat 2 tablespoons oil over medium heat in small skillet. Saute onion until tender, about 5 minutes. Add onion to noodles. Blend in eggs and salt and pepper to taste.
Step 3Heat 1/4 inch oil in large heavy skillet over medium heat. Working in batches, drop pasta mixture by tablespoons into oil, flattening each spoonful with the back of a spoon to form a thin latke. Fry on both sides until golden brown and crisp, about 5 minutes per side. (Do not turn the latkes until the first side is golden and the top is firmly set).