- Preheat your oven to 375°F (190°C) or turn on your toaster.
- If using, spread a thin layer of butter or margarine on one side of each slice of bread.
- Sprinkle the shredded cheese evenly over the buttered side of one slice of bread.
- Scatter the chopped onion over the cheese. Season with salt and pepper to taste.
- Optionally, sprinkle chopped herbs over the onion.
- Place the other slice of bread on top, buttered side facing inward, to form a sandwich.
- If using an oven, place the sandwich on a baking sheet and bake for 8-10 minutes, or until the bread is golden brown and the cheese is melted and bubbly.
- If using a toaster, place the sandwich in the toaster and toast until the bread is golden brown and the cheese is melted.
- Once cooked, remove the cheese and onion toast from the oven or toaster. Allow it to cool for a minute or two before slicing and serving.
- Enjoy your delicious cheese and onion toast as a snack or light meal!
Feel free to customize this recipe by adding other ingredients like sliced tomatoes, ham, or cooked bacon. You can also experiment with different types of cheese and bread for variety.