Caramelized Onion Cheeseburger Sliders
with Caesar Salad, Oven Fries & Smoky Mustard
- Eggs
- Milk
- Fish
- Soy
- Wheat
**Now with leaner ground beef! You asked, we listened: This isn't the HelloFresh you remember. Bigger menu. Upgraded recipes. Increased portion sizes. More variety. The best way to cook dinner just got BETTER.** What’s better than one juicy cheeseburger? Three juicy cheeseburgers! These sliders are stacked with melty cheddar, sweet caramelized onions, and all the classic fixings. On the side: crispy oven fries for dipping in smoky mustard or ketchup, plus a crisp Caesar salad with Parmesan.
Ingredients
1 unit
Onion
1 tablespoon
Fry Seasoning
1 tablespoon
Worcestershire Sauce
1.5 ounce
Caesar Dressing
(Contains: Eggs, Milk, Fish)
1 unit
Ketchup
1 ounce
Smoky Mustard
12 ounce
Potatoes
6 unit
Slider Buns
(Contains: Soy, Wheat)
10 ounce
Ground Beef
3 tablespoon
Parmesan Cheese
(Contains: Milk)
1 unit
Baby Lettuce
2 slice
Sliced Mild Cheddar Cheese
(Contains: Milk)
Not included in your delivery
Salt
Pepper
Cooking Oil
Sugar
Nutrition Values
Utensils
Cooking Steps
• Adjust racks to top and middle positions and preheat oven to 425 degrees. Wash and dry produce. • Cut potatoes into 1⁄2-inch-thick wedges. Halve, peel, and thinly slice onion. Cut each cheddar slice into 6 small squares (you’ll have 12 squares total; 24 squares for 4 servings). Trim and discard root end from lettuce; dry leaves thoroughly, then chop into bite-size pieces.
• Toss potatoes on a baking sheet with a drizzle of oil, Fry Seasoning, salt, and pepper. • Roast on top rack, tossing halfway through, until crisp and tender, 20-25 minutes.
• Heat a large drizzle of oil in a large, preferably nonstick, pan over medium-high heat. Add onion; cook, stirring occasionally, until browned and softened, 8-10 minutes. TIP: Lower heat and add a splash of water if onion begins to brown too quickly.
• Add 2 TBSP water, 1 tsp Worcestershire sauce (you’ll use more later), and 1 tsp sugar to pan with onion (use 4 TBSP water, 2 tsp Worcestershire sauce, and 2 tsp sugar for 4 servings); cook, stirring, until caramelized, 2-3 minutes. • Season with salt and pepper. Turn off heat; transfer to a small bowl. Wipe out pan.
• In a large bowl, combine beef, 1 tsp Worcestershire sauce (2 tsp for 4 servings), salt, and pepper. (Be sure to measure the Worcestershire—we sent more!) • Form mixture into 6 1⁄2-inch-thick patties (12 patties for 4).
• Heat a drizzle of oil in pan used for onion over medium-high heat. Add patties; cook to desired doneness, 2-3 minutes per side. TIP: Carefully drain any excess grease from pan if needed. • Turn off heat; top each patty with two squares of cheddar. Cover pan until cheese melts, 1-2 minutes. • While cheese melts, place buns directly on middle oven rack; toast until warmed through, 2-3 minutes.
• In a medium bowl, toss together lettuce, dressing, and Parmesan. Season with salt and pepper. • Once buns are toasted, gently separate tops from bottoms. Fill buns with caramelized onion and patties. • Divide sliders, salad, and oven fries between plates. Serve with ketchup and smoky mustard on the side.
Ground Meat is fully cooked when internal temperature reaches 160°.
Customer reviews
Review summary
Updated on Dec 2025- Flavor: Many loved the caramelized onions and smoky mustard, which elevated the sliders' taste 🍔.
- Ease of prep: Simple to make and fun to assemble, though some found forming small patties tricky.
- Suggestions: Consider adding extra seasoning to the beef; toast buns for improved texture.
- Leftovers: Generous portions often provided lunch for the next day.
- Sides: Fry seasoning was hit-or-miss; some wished for croutons in the Caesar salad.
