How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for The Ultimate Killer Cookies Of All Time?

You need 17 ingredients. The key ingredients include: 1 cup butter, melted and cooled, 1 cup sugar, 1 cup brown sugar, 2 large eggs, beaten, and more.

Is The Ultimate Killer Cookies Of All Time suitable as baking & desserts?

Yes, The Ultimate Killer Cookies Of All Time falls under the Baking & Desserts category and is a great choice for this type of meal.

How do I store leftover The Ultimate Killer Cookies Of All Time?

Store in an airtight container at room temperature for up to 3–5 days. For longer storage, freeze for up to 3 months — no need to refrigerate or reheat.

The Ultimate Killer Cookies Of All Time Recipe

Name: The Ultimate Killer Cookies Of All Time
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 cup butter, melted and cooled; 1 cup sugar; 1 cup brown sugar; 2 large eggs, beaten; 1 cup rolled oats; 1 cup crushed corn flakes; 2 cups flour; 1 teaspoon baking powder; 1 teaspoon baking soda; 1/4 teaspoon salt; 2 teaspoons vanilla; Options (mix and match as you like); 3/4 cup sweetened flaked coconut; 1 cup raisins; 1 cup chocolate chips; 3/4 cup toffee pieces; 3/4 cup chopped walnuts

Bake this irresistible The Ultimate Killer Cookies Of All Time at home. Made with butter, sugar, brown sugar and eggs. Easy step-by-step instructions in…

This The Ultimate Killer Cookies Of All Time relies on simple, everyday ingredients such as butter, melted and cooled, sugar, brown sugar and large eggs, beaten. It comes together quickly and makes 4 servings, at about 1622 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this The Ultimate Killer Cookies Of All Time delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.

Updated Jun 30, 2026

Serves 4 Baking & Desserts

1622

kcal

Calories

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Preheat the oven fully and bake on the middle rack for the most even results.
Check for doneness a few minutes early — a toothpick in the center should come out with just a few moist crumbs.
Let it cool before slicing so it sets properly and holds its shape.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.
Leave out the nuts to make it nut-free, or swap in seeds for a similar crunch.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

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The Ultimate Killer Cookies Of All Time

Tips for the best results

Variations & substitutions

My Personal Notes

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