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Caramelized Onion Cheeseburger Sliders
Caramelized Onion Cheeseburger Sliders

Caramelized Onion Cheeseburger Sliders

with Caesar Salad, Oven Fries & Smoky Mustard

Recipe Development Team
Recipe Development TeamUpdated on August 30, 2025

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.

Allergens:
Eggs
Milk
Fish
Soy
Wheat

The quantities provided above are averages only.

Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts, and wheat.

Total Time30 minutes
Prep Time10 minutes
DifficultyEasy

Ingredients

serving amount

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

/ per serving
Calories1160 kcal
Fat56 g
Saturated Fat17 g
Carbohydrate113 g
Sugar24 g
Dietary Fiber8 g
Protein48 g
Cholesterol125 mg
Sodium1480 mg
Due to the different suppliers we purchase our products from, nutritional facts per meal can vary from the website to what is received in the delivered box, depending on your region.

Utensils

Baking Sheet
Large Pan
Small Bowl
Large Bowl
Medium Bowl

Instructions

Prep
1

• 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.

Roast Potatoes
2

• 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.

Start Caramelized Onion
3

• 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.

Finish Caramelized Onion
4

• 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.

Form Patties
5

• 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).

Cook Burgers
6

• 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.

Finish & Serve
7

• 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°.