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Appetizers · Part 2 of 3: Instructions

Crispy Bacon Cheddar Stuffed Onion Bombs Step-by-step instructions

A close-up of a tender stuffed onion bomb with melted cheddar and crispy bacon on top.
Prep
Cook
Total
Serves
4
Includes 5 min resting

Before you start

Before beginning, ensure the onions are peeled and hollowed out completely to accommodate the filling. Have the ground beef ready at room temperature for about 15 minutes before cooking to ensure even heat distribution. Pre-cook the bacon until it reaches a crispy texture, then crumble it into small, bite-sized pieces and set aside for the final assembly stage.

Having all your ingredients prepped and measured before you start the cooking process will make the entire experience much smoother and more enjoyable, allowing you to focus on the technique rather than scrambling for ingredients while the skillet is hot.

Ingredients at a glance (4)
  • 4 large yellow onions
  • 1 lb ground beef
  • 8 oz cheddar cheese, shredded
  • 6 slices bacon, cooked and crumbled

Instructions

Hollowing the onions

  1. Prepare the onion shells
    Peel the onions and cut off the tops and bottoms. Carefully hollow out the center of each onion, keeping the outer layers intact to form a sturdy bowl shape for the filling.
    Look for The onion should look like a hollowed-out cup with sturdy walls.
    Tip Save the inner onion pieces for other recipes like soups or stir-fries.

The onions should be hollowed out with the outer two or three layers remaining intact to provide a strong structure. Ensure the base is level so the onions sit upright in the skillet without tipping over during the cooking process. The resulting onion shells should feel sturdy to the touch and be deep enough to hold a generous portion of the ground beef mixture without spilling over the sides, creating a clean and professional look for your finished appetizer.

Browning the beef

  1. Stuff and sear the onions
    Fill each hollowed onion with the raw ground beef. Arrange the stuffed onions in a preheated cast iron skillet. Cook over medium heat until the beef is browned and the onions begin to soften slightly.
    Look for The beef should be browned on the edges and the onions translucent.
    Safe temperature 160°F (71°C) internal temperature (ground meat)
    Tip Ensure the heat is steady to cook the meat evenly throughout the center.

The ground beef should be well-browned and fragrant. The onions will start to soften and turn a slightly translucent color as they absorb the savory juices from the meat while cooking in the cast iron skillet. You should hear a consistent, appetizing sizzle as the fat renders and the meat cooks through, filling your kitchen with a savory, mouthwatering aroma that signals the base of your dish is developing the necessary flavor and texture for the final roasting stage.

Melting and finishing

  1. Melt and finish
    Top each stuffed onion generously with shredded cheddar cheese. Place the skillet in a preheated oven at 375 degrees Fahrenheit until the cheese is bubbling and golden. Remove from the oven, sprinkle with crispy bacon, and allow to rest before serving.
    Look for The cheese should be completely melted, bubbling, and golden brown on top.
    Tip Let the onions rest for five minutes to allow the filling to set.

The cheese should be completely melted and bubbling, with a vibrant golden appearance. Once the bacon is added, the dish should look rustic and inviting, with the aroma of roasted onions and melted cheese filling the room.

The edges of the onions should be slightly caramelized, and the cheese should have achieved a beautiful, molten consistency. Check that the bacon is evenly distributed across the top, providing that essential crunch that contrasts perfectly with the soft, tender onion and savory, juicy beef filling.

Common mistakes

Avoid over-stuffing the onions, as this can prevent the beef from cooking through properly in the center. Ensure the skillet is not overcrowded, as this can lead to steaming rather than roasting, resulting in soggy onions.

Do not rush the cooking process; low and slow heat is essential to achieve the perfect balance of a tender onion and fully cooked meat filling without burning the cheese on top. Patience is key when working with onions, as they require sufficient time to break down and release their natural sweetness into the meat.

How to tell it’s done

The onion bombs are fully cooked when the beef filling reaches an internal temperature of 160 degrees Fahrenheit. The onions should be tender when pierced with a fork, and the cheddar cheese should be completely melted and bubbling with golden brown spots on the surface.

Allow the dish to rest for five minutes after removing it from the oven to ensure the filling stabilizes before serving. This resting period is crucial as it allows the juices to redistribute, ensuring that each bite is perfectly moist, flavorful, and safe to consume for everyone at your table.

  • Ground meat: 160°F (71°C) in the thickest part

Coming up in Part 3: common questions

  • Can these be made in a regular baking dish instead of a cast iron skillet?
  • How can the onions be kept upright during the cooking process?
  • What is the best way to ensure the beef is cooked through?

Also in Part 3: variations (Spicy Jalapeno Version, Herb-Infused Filling), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)