Cookie Butter. Brown sugar. Streusel topping. Three things I love, all rolled into one. These bars are based on my one-bowl blondie recipe that I’ve relayed and parlayed. It uses melted butter, which means no mixer. They come together in five minutes by hand in one bowl, so you have precisely one item to wash. Make the bars by melting one stick of butter in a microwave-safe bowl, then add an egg, brown sugar, vanilla, cinnamon, and stir to combine. I used light brown sugar since it’s less robust than dark brown, and I didn’t want to overwhelm that glorious cookie butter flavor. I made sure to use heavy hand when adding the cinnamon and vanilla as I always do; they’re two of my favorites.

Or just make your own Homemade Cookie Butter. It’s not exactly-exactly the same as the real thing, but very close. And in these bars, it would be exactly perfect. The Huffington Post wrote an article about this recipe, which was pretty cool.

If you’ve never had Cookie Butter or Biscoff , the easiest way to describe it is to imagine gingerbread cookies, cinnamon, and spices, pulverized into a thick, dense, rich spread. It’s thick like conventional peanut butter, not thin or runny like almond or sunflower seed butter. The flavor is unlike any other spread; so unique and wonderful.

Eyeballing it right out of the jar and into the mixing bowl is fine. I hate to waste precious cookie butter that becomes stuck to the sides of a measuring cup, both wasting it and creating more dishes in the process. A little extra won’t hurt if you eyeball things on the more generous side like I do. There’s a tiny bit of grittiness from the crushed gingery cookies, which adds to its appeal.

After stirring in the cookie butter, stir in the flour until just combined, and transfer the mixture to a foil-lined 8-by-8-inch pan. The layer won’t be very thick in the pan, but it’s going to be topped with glorious streusel topping. To make the streusel topping, combine half of one stick of butter, cinnamon and sugars, oats, flour, and either stir it together, cut it together with a pastry cutter, or just use your hands until pea-sized buttery nuggets form. I use my hands because it’s the fastest and in less than a minute, it comes together.

Sprinkle the streusel evenly over the batter in the pan. It’ll seem that there’s lots of it, almost too much, but it magically soaks in while the bars bake. Plus, I love streusel topping and can never have too much. I could and do go around picking it off. Case in point, these Mango Muffins with Streusel Topping Bake the bars for about 30 minutes and until the center is set and the edges have firmed up. The edges are the best clues to the bars being done because it’s hard to really see what’s going on in the center of the pan underneath all that streusel topping. At 29 minutes, I observed edge pieces that were quite firm and crusting over, and knew it was time to pull the pan from the oven. Once out of the oven, I drizzled two tablespoons melted Cookie Butter over the top of the bars, to add both visual appeal and boost the flavor even more.

They’re everything I hoped they’d be, and more. The cinnamon-and-spice quality is definitely present. Cookie butter is full of gingerbread cookies and cinnamon, and since I added to the cinnamon load by adding it to the batter and to the streusel topping, the bars were bursting with a warm, comforting quality. Coupled with vanilla, and the depth of flavor from the all-brown sugar sweetened batter that takes on caramel tones while baking, the flavor combination is just heaven sent. If Cookie Butter could get any better, pairing it with extra cinnamon, vanilla, and brown sugar is how. There’s also plenty to chew on. Mono-textured desserts like custards and puddings are usually too blah for me. I like to sink my teeth into things, and these bars are just that. The streusel topping crisps up and adds so much texture to an otherwise soft and smooth bar. The bars require some serious chewing and chomping as well as some dental floss later on to get all that texture out from your teeth.

The underside and the edges baked up extra-chewy, which was a pleasant surprise. I didn’t even use bread flour, which makes things chewier than all-purpose. The interior of the bars are dense, tender, moist, soft, and just melt in your mouth. The top streusel layer protected the interior from the oven’s heat, so it stayed wonderfully soft and moist. The brown sugar caramelizes while baking and adds so much caramely depth of flavor. There are no chemical leaveners used in this recipe; no baking powder or soda, so the bars stay flat, dense, and are not at all cakey. I dislike cakey blondies or brownies. If these were brownies, they’d be the super dense, fudgy variety, with zero amount of cakiness.

I make so many desserts and although we always enjoy them well enough, but not every single thing is earth-shattering, and doesn’t get my family oohing and ahhing. These, however, were oohed and ahhed about plenty. The recipe makes just 9 squares, which is what I typically yield from my 8×8 pan recipes, and those 9 pieces went quickly. Gone in 24 hours. I want one more bite.

Biscoff Marshmallow Chocolate Bars (no-bake) – Fast, easy, and 5 minutes to make. A twist on the bars my grandma used to make with pink and green marshmallows and peanut butter. These use regular marshmallows, graham crackers, and it’s glued together with a melted Biscoff-chocoalte mixture Tried this recipe? Leave a review! Consider leaving a 5 star rating if you’ve made and loved one of my recipes!

Caramel Peanut Butter & Jelly Bars (GF with Vegan adaptation) – The base and the top streusel layer are one in the same, a major time-saver. PB & J, brown sugar and oats, with caramel sauce baked right in

Cookie Butter Funfetti Triple Chip Bars – An easy bar that pairs Cookie Butter with melted sweetened condensed milk. The sweet sauce is drizzled over the top of the cake-bars before baking

Brown Sugar Maple Cookies – Buttery, very flavorful, soft and chewy. The brown sugar takes on caramel tones while baking, giving the cookies great richness and depth of flavor

Chocolate Banana and Biscoff Graham Bars – Bananas and chocolate are a great pairing and adding Biscoff before baking it all into a melted and gooey layered bar is a great way to use those ripe bananas

Peanut Butter and Jelly Blondies – The blondies have peanut butter mixed into the dough, and peanut butter is swirled on top. They were the springboard for today’s recipe, although they use PB rather than cookie butter, but the ratios and principles are similar

Browned Butter Caramel and Butterscotch Bars – Dark brown sugar, butterscotch and oodles of caramel combine in these dense, rich, robustly-flavored and easy bars

Cinnamon Roll Coffee Cake with Cream Cheese Glaze – The flavor of cinnamon rolls with none of the work or long waiting time. There’s a thick layer of streusel topping baked right in to this easy cake

Do you like Cookie Butter or Biscoff? Streusel Topping? Feel free to link to your favorite recipes.

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