Caramelized Onions in Cast Iron

Caramelized Onions in Cast Iron

Who loves onions? Onions are one of the most divisive ingredients out there. You either love them or you hate them. I, for one, loooove them. We go through them at volume in my house. I’m this close to buying them wholesale (very small space between my hands). 

Anyway, if you love onions like I love onions, then you need to make yourself some caramelized onions. They take a little time, but are super simple to make and are an incredible topping for some of your favorite foods. Making a burger? Top with caramelized onions. Making pizza? Top with caramelized onions. Grilling a steak? Top with caramelized onions. You’ll probably never regret it. I haven’t tried them on a birthday cake yet, but don’t tempt me. The point is, they make almost everything better. And did I mention how simple they are to make.

Enjoy, everyone!   

Pro Tip: You can substitute white sugar for the brown sugar, or not use sugar at all. The butter is also optional, but it’s highly recommended. It’s really easy to make this recipe your own by experimenting with whatever you have laying around in your spice cabinet. Also, stir often so you don’t burn them, or burn them on purpose for some really wild flavors.

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 Caramelized Onions in a Cast Iron Skillet

The Ingredients

  • 5 tbsp extra virgin olive oil

  • 2 tbsp butter (salted or unsalted) (optional)

  • 5 large sweet onions, sliced in thin rounds

  • 1 tsp salt

  • ½ tsp ground black pepper (optional)

  • ½ tbsp brown sugar (optional)

The Steps

  1. Preheat your 12-inch Stargazer Cast Iron Skillet on low for 5-10 minutes before turning the heat up to medium-low. Add the olive oil and butter to the pan and heat until the butter is fully melted. Add the onions, salt, pepper and brown sugar. Stir to combine the ingredients and coat the onions in oil.
  2. Cook slowly on medium-low, stirring regularly for about an hour until the onions are soft and caramel colored. If you like your onions to be firmer, you can cook them for 45 minutes. If you like your onions darker, cook them for 1hr 15min.
  3. It’s as simple as that. Serve as a topping on burgers, pizza, steak or anything else you want to put them on. It’s hard to go wrong here. Freeze the rest for next time you need them.


Prep Time: 10 min

Cook Time: 60 min

Serves: 5-10


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