Mix your favourite leftover halloween candy into this delicious oatmeal cookie dough and make these spectacular leftover halloween candy oatmeal cookies!
I'm always left with leftover halloween candy. Instead of eating it all, make these delicious cookies instead. These cookies contains a mixture of different candy bars including Snickers, Reese's Cups, Kit Kat's, and M&Ms.
These thick and gooey cookies require no chill time either, so you get your cookies even faster!
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Ingredients Notes
Full recipe and ingredients are in the recipe card below. Feel free to scroll through this section to view the ingredients we’re using!
Brown sugar – I used dark brown sugar for this recipe, but light brown works as well.
Egg – Make sure it's at room temperature before beginning.
Flour – I used all-purpose flour for this recipe.
Halloween candy - You can use any leftover chocolate bars you have! I love to use Kit Kat, M&M's, Snickers, and more.
Oats: Rolled oats work great for this recipe.
White sugar – Using granulated sugar creates the crisp edges and adds sweetness.
Vanilla – Using a good quality vanilla is key to adding flavour to the cookies!
Step by step instructions
Here is how to make and bake these Leftover Halloween Candy Oatmeal Cookies. You will need one tray lined with parchment paper, a large mixing bowl, a spatula, a whisk, and a standard ice cream scoop.
Step 1 – Prep. Melt the butter. Allow it to cool as you prep the rest of your ingredients. Remove the egg from the fridge and allow to come to room temperature. Chop the chocolate bars you want to use and set aside.
Step 2 – Mix dry ingredients. In a medium bowl, add in the dry ingredients; flour, rolled oats, cinnamon, cornstarch, baking soda, baking powder, and salt.
Step 3 – Mix wet ingredients. In a medium bowl, add in melted and slightly cooled butter, brown sugar, and white sugar. Whisk together for 2-3 minutes until smooth.
Step 4 – Mix in egg and vanilla. Add in the egg and vanilla and continue whisking for another 2-3 minutes until paler in color and air bubbles start to form.
Step 5 – Add in dry ingredients. With a spatula, mix the dry ingredients in until a soft cookie dough forms. Don’t over-mix!
Step 6 – Mix in add-ins. Toss in the chopped up chocolates and mix in a few times until evenly distributed.
Step 7 – Scoop and bake. Scoop the cookies onto the prepared baking tray, about 2-3 inches apart from one another. Bake the cookies 6 at a time for 10-13 minutes or until the edges are a light golden brown. The middle may look gooey, but it will continue to bake as they settle on the hot pan.
These cookies are best served fresh or next day. Store on the counter for 3 days or in the fridge for a week. You can also freeze the cookies and thaw in the microwave.
Expert Baking Tips
Here are a few baking tips from my kitchen to yours
- Don’t over mix the dough. This is crucial!
- Use any chocolate bars. You can use any of your favourite chocolate bars. I used a mix of 4 total.
- Bake the cookies right away. Don't let the dough sit around, scoop and bake them right away.
- Make sure your ingredients are at room temperature before beginning.
FAQ
Do I have to add oats?
Yes! That's a main dry ingredient.
How do I keep my cookies soft?
Storing in an airtight container, using dark brown sugar (instead of light brown) as it carries more molasses, and underbaking the cookies!
What candy bars should I use?
The best part about this recipe is that you can use any chocolate bars you want. I used a mix of M&M's, Oh Henry, Kit Kat bars, and Reese's Peanut Butter cups.
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Leftover Halloween Candy Oatmeal Cookies
Ingredients
- 1/2 cup unsalted butter melted and slightly cooled
- 1/2 cup dark brown sugar or light brown sugar
- 1/3 cup white sugar
- 1 tbsp vanilla
- 1 egg room temperature
- 1 1/2 cups rolled oats or large flake oats
- 1 cup all-purpose flour
- 1 tbsp cornstarch
- 3/4 tsp baking soda
- 1/2 tsp baking powder
- 1/4 tsp salt
- 1/2 tsp cinnamon
- 1 cup leftover halloween candy* about 15 bite-sized chocolate bars
Instructions
- Preheat oven to 350°F. Line a cookie sheet with parchment paper. Melt the butter and allow it to cool. Chop the halloween candy and set aside.1 cup leftover halloween candy*
- In a medium bowl, add in flour, oats, cinnamon, cornstarch, baking powder, baking soda, and salt.1 1/2 cups rolled oats, 1 cup all-purpose flour, 1 tbsp cornstarch, 3/4 tsp baking soda, 1/2 tsp baking powder, 1/4 tsp salt, 1/2 tsp cinnamon
- In a large bowl, whisk cooled butter, brown sugar, and white sugar. Add in egg and vanilla and whisk in.1/2 cup unsalted butter, 1/2 cup dark brown sugar, 1/3 cup white sugar, 1 tbsp vanilla, 1 egg
- Add in the dry ingredients and mix until a soft cookie dough forms. Don't over-mix!
- Add in the leftover halloween candy and mix in a few times.
- Scoop 6 cookie dough balls (about 1.5 tbsp per cookie) and place on the prepared cookie sheet.
- Bake for 10-15 minutes. Mine took 13 minutes. The cookies will be ready when the edges are a golden brown, but the inside will look very soft. Remove from oven, let the cookies cool on the hot pan for a few minutes before serving warm or cool completely and enjoy!
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