Preheat your oven to 425°F for the sweet potato fries.
Peel (if desired) and cut the sweet potato into thin fry shapes. Toss with a pinch of salt, pepper, and a little olive oil, then spread them on a baking sheet lined with parchment paper.
Bake the sweet potato fries for 20-25 minutes, flipping halfway through until they are crispy on the edges.
While the fries are baking, form a 4-ounce patty from the lean ground beef, seasoning it with salt and pepper on both sides.
Heat a non-stick skillet over medium-high heat and cook the beef patty for about 3-4 minutes per side until it reaches your preferred doneness.
In the last 2 minutes of cooking the patty, fry the egg in the same pan to your liking (sunny-side up works best) to serve atop the burger.
Prepare the fresh green salad by tossing the mixed greens with lemon juice, the remaining olive oil, salt, and pepper.
Assemble your plate by placing the beef patty, topping it with the fried egg, and adding the sweet potato fries and green salad on the side.
Enjoy your balanced and flavorful meal!