1Select CUSTOM setting and dial up 7 on LIGHT/DARK indicator dial.
2Preheat until the orange light flashes and the word HEATING disappears.
3Place potatoes in the center of a clean tea towel. Gather towel around potatoes to enclose, then squeeze to remove excess moisture.
4Put the eggs, sour cream and horseradish in a large bowl and stir until well combined. Add potatoes and stir to combine.
5Spread approximately 1 cup of the potato mixture into each waffle square. Close the lid to cook for 15 minutes or until potato mixture is cooked and crispy. To give the hash browns a golden colour, brush tops with melted butter halfway through cooking time.
6To make the tomato salsa, combine tomato, avocado, onion, garlic, pepper, cilantro, juice and oil in a medium bowl.
7Serve hash brown waffles with tomato salsa, baby spinach, basil leaves and Parmesan.