Shaksuka

Ingredients -- Ovo-Lacto Vegetarian (optional bacon)

This is a traditional cheap breakfast made daily by college students in the middle east, according to the food blogger KWOOK.

1/2 to 1 medium onion, chopped fine
Optional breakfast vegetables such as peppers and mushrooms, thinly sliced or chopped; optional cooked bacon, crumbled
Tomato sauce, for example Moroccan mint tomato sauce; or an eggplant purée sauce like Mutabal or Hunkar
2 eggs
Seasonings: minced garlic, black pepper, parsley, basil, feta cheese to taste
Keto base such as riced cauliflower or quinoa

Use a wide pan or saucepan that has a cover. Sautée the chopped onion in butter or oil until it begins to become translucent. Add any other vegetables you prefer and continue frying until the onions become a bit crispy. Stir in the sauce and spices without turning down the heat.
As the sauce mixture starts to simmer, poach 2 eggs in the pan by hollowing out two small depressions in the sauce -- crack the eggs carefully into the depressions without breaking the yolk -- then cover the pan and simmer on low for 5 minutes.
Test that poached the egg white is done by poking it. It's done when somewhat solid and opaque. Mix in some roughly chopped seasonings and preferably feta cheese, stir to melt it together. Serve on top of a base like cooked riced cauliflower, or quinoa.

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KWOOK also recommended breakfast burritos by heating and combining cooked or refried beans with scrambled eggs, and the other breakfast vegetables like onions and peppers and mushrooms (cooked). Keto tortillas (e.g. brand name Cremini) made from egg crepes can serve a keto dieter well, wrap the filling inside the egg crepes with some cheese and a touch of one of the sauces mentioned, for flavor -- like mint tomato sauce, Mutabal, or Hunkar for flavor.