This is a Recipe I found in Taste of Home, I havn't tried it yet, but it seems very simple.
4 medium Potaotes peeled and quartered
1 egg lightly beaten
1 3/4 to 2 cups flour
3 quarts water
1 Bottle of your favorite Spaghetti Sauce
Place Potaotes in a saucepan and cover with water. Bring to a boil, cook until potaotes are tender. Drain and Mash.
Place 2 cups mashed potaotes in a large mixing bowl (save any remaining potaotes for a snack) Stir in egg and salt to taste. Gradually beat in flour until blended (dough will be firm and elastic).
Turn onto a lightly floured surface; Knead 15 times. Roll into 1/2 inch wide ropes. Cut ropes into 1 inch pieces. Press down with a lightly floured fork.
In a dutch oven, bring water to a boil. Add Gnocchi in small batches; cook for 8-10 mins or until Gnocchi floats on top. Drain and serve with Spaghetti Sauce.
For more 5 ingredient Recipes check out Overwhelmed