Kitchen Sink Blondies

Simply the BEST Blondie recipe!  Add mix-ins of your choice!

There are a few recipes that every baker should keep close at hand as their go-to recipes!  In my opinion, that short list should include an amazing Chocolate Cake/Cupcake recipe, Vanilla Cake/Cupcake recipe, Brownies, Chocolate Chip Cookies and THESE Blondies!

This recipe for Kitchen Sink Blondies is perfect for adding in “everything but the kitchen sink!”  It’s an easy blondie bar recipe for you to mix and match additions of your choice… chocolate chips, butterscotch chips, nuts, coconut… the options are almost endless!

Last week, as I was thinking of making a batch of blondies, I was undecided on what additions to mix-in.   I pulled out my bin of assorted “chips” and found I had quite an assortment of 1/2 and 1/4 filled bags.  I realized many of us likely have this “problem” and figured instead of choosing what to add in… I’d just add it all!

The results of my little experiment were amazingly delicious!  These Blondies are thick, chewy, moist and flavorful!  I know I’ll be using this recipe again and again to use up my mis-matched assortment of baking goodies.

Is your "collection" of baking chips getting out of hand?  Add them all to this delicious Blondie Bar Recipe!


Print Recipe

Kitchen Sink Blondies

Yield: 1- 9"x13" pan (about 24 bars)

These Blondies are perfect for adding your choice of mix-ins! This recipe produces, thick, chewy, flavorful Blondie Bars.


1 cup granulated sugar
1 1/4 cups brown sugar
1 cup unsalted Challenge Butter, melted
3 eggs
2 teaspoons vanilla extract
3 cups flour
2 teaspoons baking powder
1 teaspoon salt
1 1/2 cups mixed chips (your choice, see notes)
1 cup chopped nuts (your choice, see notes)


1. Preheat your oven to 325*F and line a baking pan with parchment (or foil). Leave some paper hanging over the sides, so you can easily pull the bars out of the pan after baking. Lightly butter any portion of the pan that is not covered in paper (this should be the two shorter sides of the pan)

2. If desired, chop and then toast nuts of your choice, and/or coconut (see recipe notes). Spread on a baking sheet and then bake in preheated oven (325*F) for 3-6 minutes (keep a close eye on them, as nuts and/or coconut can burn quickly). When fragrant and golden, set aside to cool.

3. In a large mixer, blend together both sugars and warm, melted butter. Blend until well combined, then add eggs (one at a time) and vanilla and continue to blend until fully combined. Stop mixer.

4. In a separate bowl whisk together flour, baking powder and salt. Then, while the mixer is on low, slowly add the flour to the butter/sugar mixture. Stop the mixer immediately when you have added all the flour.

5. Add mix-ins of your choice (chips, nuts, coconut) to the mixing bowl and blend just until evenly incorporated.

6. Scoop dough into prepared pan and spread with an off-set spatula (the surface should be level before baking).

7. Bake 35-40 minutes, or until the top is golden brown and there is no wet batter visible.

8. Remove from oven and allow to cool FULLY before cutter (1 hour or more). For easiest cutting, run a knife around any edges of the bars that are touching the sides of the pan, then pull up on the parchment paper and place the giant bar on a cutter board. Cut with a serrated knife, wiping off between cuts as needed.

Mix-ins - For this recipe I used 1 1/2 cups mixed chips (including dark chocolate chips, mini chocolate chips, butterscotch chips, white chocolate chips and toffee bits). I also added 1 cup of chopped (toasted) walnuts. If you do not care for nuts, try adding toasted coconut. If you do not want to add nuts or coconut, I would suggest adding a total of 2 cups of mixed "chips".

To ensure easy cutting, you must be patient and wait until the bars are FULLY cooled before cutting. This is likely the hardest part of this recipe! =)

Reduce salt to 1/2 teaspoon if using salted butter.

I used Challenge butter, but feel free to use a high quality brand of your choice.

Recipe source - Glorious Treats (adjusted from my S'mores Bars recipe)


Simply the BEST Blondie recipe!  Add in mix-ins of your choice!

Simply the BEST Blondie recipe!  Add in mix-ins of your choice!

Happy baking!


  1. These look delicious! Love how you can customize them according to what you have left in your pantry!

  2. OOOHHH so yummy!!! Can’t wait to make these for the weekend. Did you use a 9×13 pan?

  3. Yum! These look great and a nice way to clear out the cupboards of assorted nuts and baking chips! Can’t wait to try them…

  4. These look delicious!!!!!!!

  5. I was needing something for this week and these are just perfect! Thank you!

  6. I need to bag my bags of chips like you 🙂 my pantry is a mess, but I suppose i should probably just use them up making blondies

  7. These look yummy! I’ve never made blondies before…I should make some. 🙂

  8. Mmm! These look sooo good!

  9. As I write my husband and I have two pans of these in the oven. We’re baking for a few reasons, but primarily for a neighbor with a seriously ill relative. This is a neighbor who loves my baking so this is probably the best way we can show our support and love right now. I think that it can be easy to see baking as frivolous, unnecessary or down right unhealthy, but this situation is a reminder that it can be a brilliant way to express love. Thank you for all of your fabulous recipies (more than one have been shared with the neighbors!) and a concrete way to share love!

  10. I had no idea butterscotch chips were a thing! Cannot wait to get some and try this 🙂

  11. Thanks for posting this recipe! The blondie recipes I have tried in the past were often too dry, but your recipe was exceptional! Thank you for adding it! It was a big hit in our home. Everyone thought the butterscotch would not taste good, but they made the bar more delectable.

    Thank you again!

  12. What size pan do you use?

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