Microwave Oatmeal Bars with Butterfinger Topping

These microwave oatmeal bars could not be easier to make. They have just 6 ingredients and are made in the microwave in just minutes.

If you need a quick and easy dessert that needs to be made in a hurry, these easy oatmeal bars are for you!

The cooking takes less than 10 minutes!  (Be sure to also check out my recipe for oatmeal raisin cookies for another tasty oatmeal recipe!)

Summer is upon us and the last thing I want to do is heat up my kitchen by using the oven.  But we still like the taste of a great bar recipe.

This is where this recipe comes in handy.  There is no baking and all the heating is done in the microwave, from making the crumble crust, to melting the chocolate on the top.

Easy desserts like this (and my no bake chocolate peanut butter oatmeal bars,) are my cup of tea.

The whole recipe takes less than 10 minutes to make and then the bars sit in the fridge to set while you get on with your day. 

You can even make them early in the morning, go to work and come back to a delicious dessert that the family will love.

Never made microwave desserts?  Don’t worry, this recipe will show that the microwave is made for more than just reheating foods!

Making these microwave oatmeal bars

I love that these bars only need 6 ingredients and most of them are those that I always have on hand.  (If you don’t have the Butterscotch baking bits, you can substitute chopped nuts or omit the topping altogether.)

Start by combining the oats and brown sugar in a bowl and mix well.

Don’t worry if there are clumps of the brown sugar. They will melt in the microwave.

Melt the butter in the microwave for 1 minute.  Use some of the melted butter to grease a 9″ microwave pan and set it aside.

Add the rest of the butter and the corn syrup to the oats and brown sugar mixture. Mix it well. It will be quite sticky.

Combine well and press into the prepared pan. Then microwave the oatmeal crust, uncovered for 1 1/2 minutes. 

Give it a 10 second rest and finish with another 1 1/2 minutes of cooking time. The finished oatmeal bar base with look firm but will still be a bit soft.Watch the cooking carefully. The brown sugar will rise up over the oats as it cooks.  (that’s why I give it a rest in between the two cooking times.)

Sprinkle the chocolate chips over the top of the oatmeal base and heat on 30% power for 4 1/2 minutes. The chocolate will not look completely melted at this stage but will be very soft.

Spread the chocolate over the base evenly.

Finish up by sprinkling the microwave oatmeal bars with the Butterscotch baking bits while the chocolate is still soft.
Place in the fridge for an hour to allow the chocolate to set and the base to firm up before cutting into squares.

Tasting these Butterfinger Oatmeal Bars

These yummy microwave oatmeal bars are chewy and rich with a crunchy topping.  The base holds up well and the dark chocolate gives a smooth finish to every bite.

The bars have a kind of homemade chewy granola bar texture with a scrumptious sweet crunchy surprise on top.

If you need an easy dessert to take to a pot luck dinner or bake sale, try these chocolate oatmeal bars.  They could not be easier to make but still taste amazing.

Do you love bars and slices as much as I do? Try one of these recipes, too.

• Easy butterscotch bars
• Gluten free date bars
• Caramel apple bars
• Oatmeal chocolate cookie bars

Pin these microwave oatmeal bars

Need a reminder of this microwave oatmeal bar recipe? Just pin this photo to one of your Pinterest baking board for easy access later.

Admin note: this post for Microwave oatmeal bars first appeared on the blog in August of 2018. I have updated the post to add all new photos, a printable recipe card with nutritional info, and a video for you to enjoy.

Yield: 12

Microwave Oatmeal Bars with Butterfinger Topping

Print

These microwave oatmeal bars have just six ingredients and are made in the microwave so that the kitchen stays cool.

Prep Time 1 hour

Cook Time 10 minutes

Total Time 1 hour 10 minutes

Ingredients

• 2 cups of old fashioned oats
• 1/2 cup of packed brown sugar
• 1 stick of butter, melted
• 1/4 cup of corn syrup
• 1 1/2 cup of semi sweet chocolate chips
• 2 tbsp of Butterfinger baking bits

Instructions

1. Grease a 9" square microwave proof baking dish and set aside.
2. Combine the oats and brown sugar in a bowl and mix well.
3. Melt the butter in the microwave for 1 minute and add it and the corn syrup to the oats and brown sugar.
4. Combine well and press into the prepared pan.
5. Microwave the pan, uncovered, for 1 1/2 minutes. Let it rest about 10 seconds and heat again for another 1 1/2 minutes.
6. Sprinkle the chocolate chips over the top of the base and heat on 30% power for 4 1/2 minutes.
7. Spread the chocolate over the base evenly and sprinkle with the butterscotch baking bits.
8. Place in the fridge for an hour to allow the chocolate to set and the base to firm up.
9. Cut into squares and serve.
10. Store in an airtight container.

Notes

This recipe was tested on an 1100 watt Microwave with a rotating turntable

Nutrition Information:

Yield:

12

Serving Size:

1
Amount Per Serving: Calories: 282Total Fat: 15gSaturated Fat: 9gTrans Fat: 0gUnsaturated Fat: 5gCholesterol: 20mgSodium: 75mgCarbohydrates: 38gFiber: 3gSugar: 26gProtein: 3g

Nutritional information is approximate due to natural variation in ingredients and the cook-at-home nature of our meals.

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