"Precooked bacon" refers to strips of bacon that have already been cooked before being packaged and sold. It means that it is ready to eat right away without the need for further cooking. Full definition
8 ″ Store bought aluminum pie tin Precooked bacon — 4 slices diced 4 large Eggs 1 cup of whole Milk 1 8oz Package Shredded Sharp Cheddar Cheese Black Pepper Nutmeg Cooking Spray Sliced Tomatoes (Optional) (erikeats.com)
(A dozen eggs and precooked bacon usually comes with 12 strips) purchase some additional cheese and pie tins and you could make all three. (erikeats.com)
I subsitute precooked bacon bits from Oscar Meyer so that I don't have to cook bacon. (skinnytaste.com)