This easy apple crisp is made in the cast iron skillet with oatmeal as the topper. This is a perfect fall dessert to use up extra apples. Cast Iron Apple Crisp is a simple yet delicious old fashioned dessert. Perfect topped with ice cream or whipped cream for a crowd.

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A slice of apple crisp on a plate surrounded by apples. A portion of the apple crisp in the skillet with a spoon

Tips and Tricks

What do you serve with apple crisp? I like to eat apple crisp as a dessert in the fall after going apple picking or for Thanksgiving dessert. It’s a classic comforting fall dessert using seasonal fruit. I like to serve it with a bit of vanilla ice cream or whipped cream and hot coffee or tea.

How do you store apple crisp? Store apple crisp in the fridge covered in plastic wrap for up to four days. I’ve never had it last that long. 

What size cast iron do you use? I tested the recipe with a 10 inch cast iron skillet from Lodge. You can try it with a 12 inch cast iron skillet but it may be thinner so I’d recommend adding a few extra apples. An eight inch cast iron skillet will also work but be careful not to overflow the pan.

How long is apple crisp good for? Apple crisp is good in the fridge for about four days. 

How do you reheat apple crisp? If your apple crisp is still in the cast iron skillet, reheat at 350F until warmed through. If you’re just warming up a small portion you can microwave it until warmed up in a bowl. 

Can you make this ahead of time? Yes, this is a great make ahead dessert that can be eaten at room temperature. It’s a great Thanksgiving dessert to make because you can easily make this a day or two before the main event. Another option is to prepare the crisp with the apples and crisp unbaked and store in the fridge. Pull it from the fridge and place in a preheated oven and cook for 40 minutes. It may take a little longer to cook from a cold fridge and cold pan, but this is a great option while eating Thanksgiving dinner. Plus it’ll make your house smell wonderful and make everyone hungry for dessert. 

Does this travel well? Yes, I love bringing this to fall birthday parties or other events. It’s also a great make ahead fall dessert for Thanksgiving. It’s a family favorite and a classic comfort food that is a big crowd pleaser.

Ingredients

Raw ingredients laid out and labeled: Salt, ground cinnamon, unsalted butter, brown sugar, AP four, old fashioned oats and a variety of cooking apples.

What apples should you use? I typically use any combo of the following: cortland, empire, honey crisp, braeburn, mutsu, pink lady and granny smith apples. These are all good baking and eating apples and have a variety of textures and flavors.  I’d recommend not using all of one type of apple to get a deeper flavor and the best texture. Some types of apples, like red delicious, will break down very quickly and become mushy.  I’d avoid them if possible for this application.

What types of oats do you use for apple crisp? I use old fashioned oats or rolled oats. Avoid instant cooking oats or quick oats because they will break down while baking. It is best to avoid steel cut oats as well because they will not have a great texture.

What are the best toppings for apple crisp? My favorite toppings are a really good vanilla ice cream or homemade whipped cream. If you’ve feeling lazy, the stuff from the can or Cool Whip from the freezer works just as well. Another great option is to top it with some extra cinnamon and toasted pecans or walnuts. 

Method

How do you make cast iron apple crisp? Preheat the oven to 350F. Place cut up, peeled and cored apple slices in a large mixing bowl and set aside. Preheat a 10 inch cast iron skillet over medium low heat and melt the butter for the filling. Once the butter is melted, add brown sugar, cinnamon and salt by whisking it in. Pour the butter mixture into the mixing bowl that has the apples and toss until the apples are well coated. Add the apples and butter mixture back into the skillet and turn the heat up to medium.  Stir occasionally while it cooks for five minutes, until the apples begin to soften. Remove the pan from the heat, but keep the apple mixture in it.

2x2 photo collage of the process. 1) Peeled, cut up and cored apple slices in a large mixing bowl 2) Melted butter with cinnamon, sugar and salt whisked in, in a cast iron skillet. 3) Apples covered in cinnamon sugar butter mixture. 4) Cooking apple mixture in cast iron skillet on the stove.

After the apples are partially cooked, cut the five tablespoons of butter into five separate pieces. In a medium mixing bowl, add all the toppings EXCEPT the ground cinnamon. Combine ingredients using either your hands or a pastry cutter. It is okay to have small lumps of butter throughout the mixture. Top the apples in the skillet with the topping evenly and sprinkle on the cinnamon.

1x2 photo collage of process steps. 1) A close up of crumble 2) Apple crisp in pan unbaked.

Place in the oven and cook for 35-40 minutes, until the apples are tender, slightly bubbling and the topping is crunchy. Remove from the oven and let it rest. Allow the crisp to cool for about 30 minutes before serving with ice cream or whipped cream. 

Can you bake in a pan instead of a cast iron skillet? Yes! I recommend using a 9×9 metal pan as an alternative. Realistically any oven safe pan will work that’s a similar size. An 8×8 pan would work just as well but the crisp may be a little bit thicker and may take a little longer to cook. If you don’t have any of those options, you can grab a cheap disposable pan at the grocery store and it’ll work just as well. 

Do you need to let this rest after pulling it from the oven? I recommend letting the dessert rest for about 30 minutes before trying to eat it. Before that it’ll be molten lava that will absolutely burn your tongue. After about 30 minutes it should still be warm and easier to serve. 

Should you cover apple crisp when baking? No! If you cover the apple crisp while baking the crisp won’t get crisp. 

Can you double this recipe? If you want to double this recipe you absolutely need a larger pan to cook it. The cooking time will be longer so watch it closely. Typically when I have to make extra I just make it in two separate pans and the cooking time is about the same. 

Is six apples enough? This really depends on the size of your apples. Whenever I make it, I use medium apples and six is plenty. However, I’ve had readers say it wasn’t enough apples and added a few more. I’d make sure that the apples don’t overflow the pan but they do cover the bottom. The apples will cook down a bit. When you are cooking the apples on the stove top, you will be able to tell if you have enough apples. 

What’s the best way to cut up apples? I use an old style apple peeler that peels, cuts and cores the apples all at once. This isn’t necessary but in the fall I make A LOT of apple crisp and this helps me a lot. It is a once a year tool though. If you want to do it by hand, peel the apples and then cut around the core. Next slice those pieces into your desired size. I’ve found a simple how to peel and slice an apple video if you’re a visual learner. 

Baked apple crisp in a cast iron skillet with a red and white napkin and cut up raw apples.

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Baked apple crisp in a cast iron skillet with a red and white napkin
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5 from 1 vote

Cast Iron Skillet Apple Crisp

This easy apple crisp is made in the cast iron skillet with oatmeal as the topper. This is a perfect fall dessert to use up extra apples. Cast Iron Apple Crisp is a simple yet delicious old fashioned dessert. Perfect topped with ice cream or whipped cream for a crowd.
Prep Time10 mins
Cook Time40 mins
Resting Time30 mins
Total Time1 hr 20 mins
Servings: 6 Servings
Author: Samantha

Ingredients

Filling

  • 6 medium apples peeled, cored and cut into small pieces
  • 3 tablespoons unsalted butter
  • cup brown sugar
  • 2 teaspoons ground cinnamon
  • teaspoon Diamond Crystal kosher salt

Topping

  • 1 ¼ cup old fashioned oats
  • 2 tablespoons all purpose flour
  • 5 tablespoons cold unsalted butter cut into 5 pieces
  • cup brown sugar
  • teaspoon Diamond Crystal kosher salt
  • Sprinkle of ground cinnamon

Instructions

  • Preheat the oven to 350 F.
  • Add cut up, peeled and cored apple slices to a large mixing bowl and set aside.
  • Preheat a 10 inch cast iron skillet over medium low heat and melt the butter for the filling.
  • Once the butter is melted, whisk in brown sugar, cinnamon and salt.
  • Pour the butter mixture over the apples in the mixing bowl and toss until the apples are well coated.
  • Add the apples and butter mixture back into the skillet and turn the heat up to medium. Stir occasionally while it cooks for 5 minutes, until the apples begin to soften. Remove the pan from the heat, but keep the apple mixture in it.
  • After the apples are partially cooked, cut the 5 tablespoons of butter into 5 separate pieces.
  • In a medium mixing bowl, add all the toppings EXCEPT the ground cinnamon. Combine ingredients using either your hands or a pastry cutter. It is okay to have small lumps of butter throughout the mixture.
  • Top the apples in the skillet with the topping evenly and sprinkle on the cinnamon. Place in the oven.
  • Cook for 35-40 minutes, until the apples are tender, slightly bubbling and the topping is crunchy.
  • Allow to rest and cool at room temperature for about 30 minutes before serving.

Notes

  • Use any of the following apples: cortland, empire, honey crisp, braeburn, mutsu, pink lady and granny smith apples. AVOID RED DELICIOUS.
  • You can use light or dark brown sugar for this recipe.
  • 6 medium apples should be enough but if you’re using small apples you may want more. The amount of apples depends on the size of the apples. Just don’t over fill the pan!
  • If you don’t have a cast iron skillet you can use a 9×9 metal pan to bake the crisp.
  • Store cooked apple crisp in the fridge covered in plastic wrap. I usually remove it from the skillet to make it easier to store.
  • Reheat the entire apple crisp in the oven at 350F until warmed through or microwave individual portions.
  • This recipe was tested with Diamond Crystal Kosher salt, if you’re using a different brand, use less to taste.

Originally posted on November 13, 2018. Tips updated and republished on July 6, 2021.

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  1. Amy K.

    December 7, 2020

    This was a big hit at our Thanksgiving dinner this year. I topped it with ice-cream. We even indulged on it again the next morning and called it “breakfast”!

  2. Samantha

    December 7, 2020

    I like the way you think Amy! I’ve decided eaten this for breakfast, it’s got oatmeal, it totally counts. Thanks for sharing

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