Butterscotch Mud Bars are a joyful no‑bake dessert layered with an Oreo crust, fudgy brownie, and creamy butterscotch mousse—perfect for creating sweet memories without ever turning on the oven. In this article, you’ll find heartfelt stories from Grandma Rosie’s kitchen, a clear step‑by‑step guide, smart variations, and answers to your burning questions like “Can I Use Store‑Bought Brownie Mix?” and “Can I Make Butterscotch Mud Bars Ahead of Time?” Get ready to dive into layers of flavor and nostalgia, all while keeping things simple.
A Family Memory in Every Bite
Butterscotch Mud Bars have become more than a dessert in my kitchen—they’re a delicious reminder of why I started this no-bake journey with my granddaughter Lily. One rainy afternoon, she asked, “Grandma, can we still make something sweet—without baking?” That simple question led us to mix a crushed Oreo crust, rich brownie layer, and fluffy butterscotch mousse. I called them Butterscotch Mud Bars, and from the first bite, they were a hit.
Each pan of Butterscotch Mud Bars brings back that moment—her curious eyes, little giggles, and the joy of scraping every last bit of mousse from the bowl. Since then, these bars have held a special place in my recipe box, right next to our Cottage Cheese Banana Bread and Strawberry Pretzel Cookie Ice Cream Sandwiches. They’re a perfect blend of crunchy, fudgy, and creamy, made for memory-making.
Whether you’re preparing for a family gathering or need a quick treat, Butterscotch Mud Bars are always a reliable, crowd-pleasing option. You don’t need a fancy oven—just a mixing bowl, a bit of layering, and time to chill. And the results? A dessert that feels gourmet but is totally beginner-friendly.
Why Butterscotch Mud Bars Shine
What makes Butterscotch Mud Bars so beloved is their layers of texture and flavor. The base is a buttery Oreo crust that gives you that perfect crunch. Then comes the brownie layer—dense, chocolatey, and made richer if you go homemade (though store-bought works great too). The star, though, is the butterscotch mousse: light, creamy, and just the right level of sweet, thanks to instant pudding and whipped topping.
These bars are a hit year-round and especially great for summer when turning on the oven feels like a chore. They’re rich enough for chocolate lovers, light enough for a hot day, and simple enough for a weeknight craving. In short, Butterscotch Mud Bars check every box—and then some.
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Butterscotch Mud Bars: Easy Layered Dessert Without the Oven
- Total Time: 3 hours
- Yield: 12 bars 1x
- Diet: Vegetarian
Description
Creamy no-bake butterscotch mud bars layered with Oreo crust, rich brownie, and fluffy pudding mousse. A perfect make-ahead treat.
Ingredients
2 cups crushed Oreo cookies
6 tablespoons unsalted butter, melted
1 box brownie mix (plus eggs, oil, water per package)
1 (3.4 oz) box instant butterscotch pudding
2 cups cold whole milk
2 cups whipped topping (Cool Whip or homemade)
Instructions
1. Mix crushed Oreos and melted butter. Press into lined 9×13” pan. Chill while prepping brownie.
2. Prepare brownie mix as directed. Pour over crust. Bake, then cool completely.
3. Whisk pudding mix with milk until thick. Fold in whipped topping to create mousse.
4. Spread mousse over cooled brownie layer evenly using a spatula.
5. Chill assembled bars for at least 2 hours, or overnight, until set.
6. Slice and serve chilled. Garnish with whipped cream or caramel if desired.
Notes
Use homemade brownie for richer flavor or boxed mix for speed.
Bars stay fresh up to 4 days in the fridge, tightly covered.
You can swap pudding flavor (vanilla, banana, chocolate).
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Category: Dessert
- Method: No-Bake
- Cuisine: American
Nutrition
- Serving Size: 1 bar
- Calories: 310
- Sugar: 28g
- Sodium: 160mg
- Fat: 18g
- Saturated Fat: 8g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 36g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 35mg
Layer by Layer: Anatomy of Butterscotch Mud Bars
Crust & Brownie Base
Butterscotch Mud Bars begin with an irresistible base made from crushed Oreo cookies mixed with rich, melted butter.. This forms a firm, chocolatey crust that adds the perfect crunch beneath the creamy layers. Once you’ve pressed it into the pan, the next step is the brownie layer. Yes, you can definitely use store-bought brownie mix—perfect for answering the FAQ: “Can I use store-bought brownie mix?” Just follow the instructions on the box, pour the batter over the crust, and bake as directed. While the boxed mix saves time and works well, a homemade batter adds that extra depth of flavor and gooey richness.
Once the brownie layer is baked and fully cooled, it’s ready for the creamy finale.
Silky Butterscotch Mousse Layer
Sitting atop the brownie base is the luxurious butterscotch mousse that gives Butterscotch Mud Bars their signature flavor. This layer comes together with a package of instant butterscotch pudding and cold whole milk (though lower-fat milk works in a pinch). Once the pudding thickens, fold in whipped topping—homemade or store-bought—for a light, fluffy finish.
This section also addresses the FAQ “Can I Use a Different Flavor of Pudding for the Mousse Layer?” Yes, you can swap the butterscotch for vanilla, chocolate, or banana pudding. Just be sure to stick with the same box size and preparation method.
Spread the mousse gently over the cooled brownie layer, then refrigerate the entire pan for at least 2–4 hours. This allows the mousse to set properly and the flavors to meld. The result? Butterscotch Mud Bars with the perfect contrast of textures: creamy, chewy, and crunchy in every chilled bite.
Ingredients & Instructions for Butterscotch Mud Bars
These Butterscotch Mud Bars are made with simple pantry staples and come together in just a few layers. Here’s what you’ll need and how to make them:
Ingredients
- 2 cups crushed Oreo cookies (about 20 cookies, no filling removed)
- 6 tablespoons unsalted butter, melted
- 1 box brownie mix (plus ingredients listed on the box: eggs, oil, and water)
- 1 (3.4 oz) box instant butterscotch pudding mix
- 2 cups cold whole milk
- 2 cups whipped topping (store-bought like Cool Whip or homemade)
Instructions
- Prepare the Crust:
Mix the crushed Oreo cookies and melted butter until evenly combined. Press the mixture firmly into the bottom of a 9×13” baking dish lined with parchment paper. Refrigerate while preparing the brownie layer. - Bake the Brownie Layer:
Prepare the brownie batter as directed on the box. Pour it gently over the chilled crust and bake according to the mix instructions, usually 20–25 minutes. Allow the brownie to cool completely in the pan on a wire rack. - Make the Butterscotch Mousse:
In a mixing bowl, whisk together the pudding mix and cold milk for about 2 minutes until thickened. Fold in the whipped topping until smooth and airy. - Assemble the Bars:
Once the brownie layer has cooled, spread the mousse evenly over the top. Use an offset spatula for smooth results. - Chill the Bars:
Refrigerate the fully assembled bars for at least 2 hours or overnight, until the mousse sets completely. - Slice & Serve:
Cut into squares using a sharp knife. For clean edges, dip the knife in warm water and wipe between cuts. Garnish with caramel drizzle or whipped cream if desired.
Prep Tips, Timing & Variations
Make-Ahead & Storage Tips
One of the biggest perks of Butterscotch Mud Bars is how easy they are to make ahead. Whether you’re prepping for a party, a picnic, or just a relaxing weekend treat, these bars fit perfectly into your schedule. The crust and brownie base can be prepared a full day in advance. Simply bake the brownie layer over the crust, let it cool completely, then cover and refrigerate until you’re ready for the mousse.
This answers the FAQ “Can I Make Butterscotch Mud Bars Ahead of Time?” Absolutely. The mousse layer, made with instant pudding and whipped topping, can also be prepared the night before and stored separately in an airtight container. When it’s time to assemble, just spread the mousse over the brownie, chill the whole thing for a few hours, and serve. The bars hold up well in the fridge for 3–4 days, so they’re a fantastic make-ahead option.
If you plan to serve these at an event, consider slicing them before refrigerating to make them easier to plate and serve. You can also top them just before serving for the freshest look.
Switch It Up With Flavors & Add-Ins
There’s no rule that says you have to stick with butterscotch. Butterscotch Mud Bars adapt beautifully to flavor swaps and add-ins. If you’re in the mood for something different, try vanilla, banana, or even chocolate pudding for the mousse layer. Each brings its own unique twist while keeping that creamy, no-bake convenience.
You can also stir mini chocolate chips, chopped pecans, or crushed toffee bits into the mousse for added texture and flavor. Want a little sparkle on top? Finish the bars with a drizzle of caramel sauce or a sprinkle of flaky sea salt. Whether you’re following the original recipe or adding your own spin, these bars never disappoint.
Baking, Assembling & Serving Strategies
Baking & Cooling Steps
While Butterscotch Mud Bars are mostly no-bake, one essential step involves baking the brownie layer—unless you’re going fully no-bake by using pre-baked brownies. If you’re making the brownie base from scratch or using a boxed mix, pour the batter over the prepared Oreo crust and bake it according to the brownie instructions. Keep a close eye on the baking time; you want fudgy, not dry.
To check for doneness, insert a toothpick into the center. A few moist crumbs are okay—it’ll continue to set as it cools. Let the brownie layer cool completely in the pan on a wire rack. Cooling is key; spreading mousse over warm brownies will melt it, ruining the texture.
If you’re in a rush, pop the pan into the fridge (uncovered) for quicker cooling. Just be sure the layer is firm before you move to the next step.
Assembly, Chilling & Serving
Once the brownie layer is cool, it’s time to build those decadent Butterscotch Mud Bars. Spread your prepared mousse evenly across the top with an offset spatula for smooth edges. For best results, refrigerate the assembled bars for at least 2–4 hours, or overnight if time allows. This step ensures the mousse sets firmly, making clean slicing much easier.
Before serving, you can top the bars with extra whipped cream, crushed butterscotch candies, or a drizzle of caramel. Cut them into small squares using a warm knife for sharp, clean edges.
These bars shine at any event, from summer cookouts to cozy holiday gatherings. Because they’re served chilled, they’re perfect for warmer months—just keep them in a cooler or refrigerated until ready to serve.
FAQs
Can I Use Store-Bought Brownie Mix?
Yes, you can! A boxed brownie mix works great for the base of Butterscotch Mud Bars. Simply follow the package instructions to prepare the brownie mix, then pour it over the Oreo cookie crust. While homemade brownies offer a richer flavor, the store-bought version is quick and reliable—perfect for busy days.
Is it possible to prepare Butterscotch Mud Bars in advance?
Absolutely. These bars are ideal for make-ahead prep. You can bake the crust and brownie layer the day before, and even whip up the mousse early. Store each layer separately or fully assembled in the fridge for up to 3–4 days. They get even better as they chill.
Is it okay to use a different pudding flavor for the mousse layer?
Yes, you can easily customize the flavor. You can swap the butterscotch pudding for chocolate, vanilla, or banana—whatever suits your taste.. Each option brings a different twist to the mousse layer, while keeping that light and creamy texture.
What’s the Best Way to Cut Butterscotch Mud Bars Cleanly?
Use a sharp knife warmed under hot water, then wipe it clean between slices. This helps you get perfect, bakery-style edges without smearing the mousse or brownie layers.
Conclusion
Butterscotch Mud Bars are the kind of dessert that brings smiles at first bite and second helpings without hesitation. They’re a little nostalgic, a lot of flavor, and perfect for any occasion—especially when the oven just isn’t part of the plan. From the crunchy Oreo crust to the silky butterscotch mousse, every layer delivers comfort and joy. Whether you’re making memories with kids, prepping treats for a party, or just craving something sweet and simple, these bars have your back.
If you loved this, try our Baby Lemon Impossible Pie Recipe with Condensed Milk or Chocolate Peanut Butter Protein Bars for more chilled dessert magic. No oven. No stress. Just sweet moments, one square at a time.
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