01 - Preheat the oven to 425°F.
02 - Toss the cut potatoes with vegetable oil, salt, and black pepper on a baking sheet. Spread them in a single layer and bake for 30–35 minutes, flipping once, until golden and crisp.
03 - In a heatproof bowl, whisk together egg yolks, lemon juice, and Dijon mustard. Place the bowl over a saucepan of gently simmering water (double boiler method), whisking constantly until the mixture thickens slightly (about 2 minutes).
04 - Slowly drizzle in the melted butter while whisking until the sauce is thick and creamy. Remove from heat. Season with salt, pepper, and cayenne. Keep warm.
05 - In a nonstick skillet, fry eggs sunny-side up or to your preference. Set aside.
06 - If using, cook bacon or sausage until crisp. Drain and crumble.
07 - Once fries are ready, immediately transfer to serving plates. Top with cheese curds.
08 - Layer with eggs, bacon or sausage (if using), and green onions. Generously drizzle warm Hollandaise sauce over everything. Serve immediately.