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 Monster Cookie Bars With Peanut Butter And Oatmeal?

You need 11 ingredients. The key ingredients include: Bars:, 1 cup packed brown sugar, 2/3 cup melted butter, 1/4 cup light corn syrup, and more.

Is Monster Cookie Bars With Peanut Butter And Oatmeal suitable as baking & desserts?

Yes, Monster Cookie Bars With Peanut Butter And Oatmeal falls under the Baking & Desserts category and is a great choice for this type of meal.

How do I store leftover Monster Cookie Bars With Peanut Butter And Oatmeal?

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.

Monster Cookie Bars With Peanut Butter And Oatmeal

Name: Monster Cookie Bars With Peanut Butter And Oatmeal
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: Bars:; 1 cup packed brown sugar; 2/3 cup melted butter; 1/4 cup light corn syrup; 1/4 cup peanut butter; 1/2 teaspoon vanilla extract; 4 cups quick-cooking oats; Topping:; 1 cup semisweet chocolate chips; 1/2 cup butterscotch chips; 1/3 cup peanut butter

Start your day right with this Monster Cookie Bars With Peanut Butter And Oatmeal recipe. Made with brown sugar, butter, light corn syrup and peanut but…

This Monster Cookie Bars With Peanut Butter And Oatmeal relies on simple, everyday ingredients such as bars:, packed brown sugar, melted butter and light corn syrup. It comes together quickly and makes 4 servings, at about 1486 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 Monster Cookie Bars With Peanut Butter And Oatmeal 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

1486

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.

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

My Personal Notes

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Monster Cookie Bars With Peanut Butter And Oatmeal

Tips for the best results

Variations & substitutions

My Personal Notes

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