Preheat the oven to 425°F. Line a large baking sheet with parchment paper.
Place the sweet potatoes on the baking sheet. Add the olive oil, garlic powder, salt, and black pepper. Toss to coat evenly.
Spread the sweet potatoes in a single layer.
Roast for 25 to 30 minutes, stirring halfway through, until tender and lightly browned.
Heat a large skillet over medium heat. Add the ground beef and yellow onion. Cook for 6 to 8 minutes, breaking the beef into small pieces, until browned and the onion is tender.
Drain any excess grease from the skillet.
Add the garlic, Worcestershire sauce, onion powder, smoked paprika, salt, and black pepper. Cook for 1 minute, stirring frequently.
Stir in the chopped bacon.
Remove the skillet from the heat.
Add the Greek yogurt, ketchup, mustard, chopped pickles, pickle juice, and garlic powder to a small mixing bowl. Stir until smooth.
Divide the roasted sweet potatoes evenly among 4 serving bowls.
Top each bowl with the beef mixture, shredded cheddar cheese, diced tomatoes, chopped pickles, and red onion.
Drizzle the burger sauce over each bowl and serve.
Notes
Tips and Tricks
Use Crisp Bacon - Cook the bacon until crisp before chopping it. Softer bacon can become chewy when mixed with the warm ground beef.Don't Crowd the Baking Sheet - Leave a little space between the sweet potato cubes so they can brown instead of steaming. Use two baking sheets if necessary.Make the Sauce Ahead - Prepare the burger sauce up to 2 days in advance and refrigerate it in a covered container. Stir before serving.Warm the Cheese - If you prefer melted cheddar, sprinkle it over the hot beef before adding the cold toppings and burger sauce.Keep the Pickles Crunchy - Add the chopped pickles just before serving. This is especially helpful if you're preparing the bowls ahead of time.
Storing and Reheating
Refrigerating - Store the cooked sweet potatoes and beef mixture in airtight containers in the refrigerator for up to 3 to 4 days. Keep the burger sauce, tomatoes, pickles, and red onion in separate containers.Freezing - Freeze the cooked beef mixture and roasted sweet potatoes in separate freezer-safe containers for up to 3 months. Thaw overnight in the refrigerator. Prepare the sauce and fresh toppings when you're ready to serve.Reheating - Reheat the beef and sweet potatoes in the microwave in 30 to 60-second intervals until thoroughly heated to 165°F. You can also warm the sweet potatoes in a 375°F oven until hot. Add the cheese, cold toppings, and burger sauce after reheating.