In an oven proof skillet over medium-high heat, saute the onions and garlic in olive oil for about 5 minutes. Add the spinach and kale and red pepper flakes. Sauce another 3 minutes until the kale is wilted. Season with salt and pepper to taste.
Remove the skillet from the heat and distribute the marinara sauce on top of the kale. Sprinkle with ½ the feta cheese. Top with the two eggs and sprinkle with the remaining feta. Bake for 12-15 minutes until the egg whites are cooked and the yolk is still a little runny. Serve immediately and enjoy.
Notes
(adapted from a recipe by Gina as posted on Tasty Kitchen)Nutrition information is calculated using an ingredient database and should be considered an estimate. When multiple ingredient alternatives are given, the first listed is calculated for nutrition. Garnishes and optional ingredients are not included.