Savory Croissant Breakfast Sandwich

1.Preheat your oven to 350°F (175°C).

2.In a skillet over medium heat, melt 1 tablespoon of butter. Add the sliced onions and a pinch of salt. Cook, stirring occasionally, until the onions are caramelized and golden brown, about 10-15 minutes. Remove from heat and set aside.

3.In the same skillet, add another tablespoon of butter. Crack the eggs into the skillet and cook them sunny-side up or to your desired doneness. Season with salt and pepper.

4.While the eggs are cooking, slice the croissants in half horizontally and place them on a baking sheet. Toast them in the preheated oven for about 5 minutes until they are warm and slightly crispy.

5.Once the croissants are toasted, layer the bottom half with a slice of tomato, followed by the caramelized onions, the cooked eggs, and a sprinkle of shredded cheese. If desired, add fresh herbs for extra flavor.

6.Place the top half of the croissant on the sandwich and serve immediately while warm.