Au Gratin Peas and Potatoes

Directions

1. In a large skillet, cook bacon until crisp. Remove with a slotted spoon to paper towels. Drain, reserving 1 tablespoon drippings. In the drippings, saute onion until tender.
2. Layer with potatoes, salt, peas, 1 cup cheese and bacon. Reduce heat; cover and simmer until heated through, about 10 minutes.
3. Combine mayonnaise and milk until smooth; pour over bacon. Sprinkle with the remaining cheese. Remove from the heat; let stand for 5 minutes before serving.