To a straight-edged mug, add the butter. Heat in the microwave for 20 seconds until melted. Add the almond flour, baking powder, the egg, and 1/8 tsp salt. Whisk until combined.
Step 2
Microwave for 90 seconds. Remove from the microwave and let cool slightly. Slice it in half and set it aside. Meanwhile, slice the halloumi into 2.
Step 3
Add the oil to a nonstick pan and place a round egg mold. Crack the egg in the hole and season with a pinch of salt and pepper. Place the halloumi slices next to the egg.
Step 4
Cook the egg for 2-3 minutes until the whites are cooked and the yolks are still runny. Flip the halloumi after one minute, and cook until both sides are crispy. Remove the egg and halloumi slices from the pan and transfer them to a plate.
Step 5
Place the bread slices on the pan and toast them for a minute or two until golden. Take the bread off the pan and place it on a plate.
Step 6
Add a lettuce leaf to one slice of bread. Add the tomato slice, halloumi slices, then the fried egg. Top with another lettuce leaf and the second bread slice.
Step 7
Feel free to add your desired ingredients to this breakfast sandwich. Serve immediately.