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We just got back from a week with friends in Palm Springs, where it was still triple digits and the pool was doing all the work. Landing back in Denver, the air had that first real bite of fall in it — the kind that shows up almost overnight here, whether you’re ready or not. Our neighbors clearly were ready; by the time we’d unpacked the car, they were already out on the porch figuring out where the string lights and the flickering jack-o’-lantern bulbs were going this year. Nothing says “fall is officially here” quite like coming home to that.
It felt like the right week to make a batch of these Pumpkin Butterscotch Cupcakes — moist, warmly spiced, studded with butterscotch morsels, and finished with real cream cheese frosting. If you’ve made the original Pumpkin Butterscotch Cupcakes before, this is that same recipe, reworked from the ground up for baking above 3,000 feet — adjusted leavening and oven temperature so you get the same tender crumb without the sinking or dense middle that under-adjusted high-altitude cupcakes are prone to. If you’re at sea level or somewhere below that 3,000-foot mark, bake the regular version instead — it’s written for you.
Why Weighing Your Ingredients Matters at High Altitude
Here’s something I’ve come to believe firmly after years of adapting recipes for Denver’s elevation: at high altitude, measuring by volume just isn’t as forgiving. Down at sea level, a cup of flour that’s a little heavy-handed or light-handed mostly gets absorbed by the recipe’s own margin for error. Up here, where we’re already leaning on precise adjustments to leavening, liquid, and oven temperature to keep a cake from collapsing or drying out, an extra few grams of flour from an over-packed cup can be the difference between a cupcake that domes beautifully and one that sinks in the middle.
The issue is that a “cup” of flour isn’t a fixed amount — it depends entirely on how it got into the cup. Scoop straight from the bag and you can pack in noticeably more than if you spoon it in lightly and level it off. King Arthur Baking — a source I trust and link to often — measures 1 cup of all-purpose flour at 120 grams and 1 cup of granulated sugar at 200 grams, and recommends weighing for consistency for exactly this reason. That consistency matters more, not less, once you’re already fighting elevation.
This is part of why I’ve leaned so heavily on my kitchen scale for anything I bake above 5,000 feet, and it’s worth the investment if you bake at altitude regularly. I’ve been happy with the OXO 11-lb Stainless Steel Food Scale with Pull-Out Display — it has enough capacity for a full batch of batter in one bowl, a pull-out display so you can still read the numbers even when a big mixing bowl is blocking the platform (I love this so much), and it switches between grams, ounces, and pounds with one button, which is handy when a recipe (like this one) gives you weights but your instinct still reaches for cups. It’s not a gadget with a dozen features you’ll never touch — just a scale that does the basics reliably, which is really all you need here.
If you want the fuller picture on why high-altitude baking needs these kinds of adjustments in the first place, I’ve written up the reasoning in more detail in High-Altitude Baking Adjustments.
About That Halloween Decorating Trick
If you want to dress these up for a Halloween table, the regular Pumpkin Butterscotch Cupcakes post has a fun stencil trick — dusting a spooky bat, ghost, or spiderweb design over a plain, unfrosted cupcake before it’s fully decorated. I’m not going to walk through it again here, but here’s a peek at how the spiderweb version turns out:
Head over to the decorating section of the original post for the full how-to if you want to try it on this batch.
High-Altitude Pumpkin Butterscotch Cupcakes
Ingredients
- 1 Cup Butterscotch Morsels I used Guittard (which does contain some artificial color, darn it.)
- 255 Grams All-Purpose Flour
- 375 Grams Granulated Sugar
- 1 1/2 tsp Baking Powder
- 1/2 tsp Salt
- 2 tsp Pumpkin Pie spice (Or use whatever your favorite pie recipe calls for.)
- 1 cup Pumpkin Puree
- 1/2 cup Vegetable Oil
- 3 Eggs large
- 1 tsp Vanilla
Cream Cheese Frosting
- 8 oz Cream Cheese (At room temp)
- 4 tbsp Butter (At room temp)
- 1 tsp Vanilla
- 4 cups Powdered Sugar
- 1 tsp Milk or Cream, if necessary (Just to bring the frosting to consistency)
Instructions
- Preheat oven to 365F
- Line two muffin tins with 24 cupcake liners. (I used aluminum liners and they came out perfectly clean.)
- Melt butterscotch morsels over double-boiler or in microwave for about 30 seconds, stirring and heating again until JUST melted.
- In one large bowl, combine the Flour, Sugar, Baking Powder, Spice and Salt. Whisk together until blended.
- In a mixing bowl, lightly blend the pumpkin, vanilla and vegetable oil.
- Add the melted butterscotch chips and blend just for a minute. Add eggs one at a time until incorporated.
- Add the flour mixture in 4 portions, blending just until moistened. Beat at medium for two minutes.
- Fill cupcake liners 3/4 full. (I use an ice-cream scoop.) Make sure all the liners are well-seated in the tin and bake for 15-18 minutes, or until a toothpick inserted into an inner cupcake comes out clean.
- Cool on a wire rack for 10 minutes, then remove from tin and cool completely
Cream Cheese Frosting
- Beat together the cream cheese and butter until blended and smooth.
- Add vanilla and blend.
- Beat in the powdered sugar. I put ALL the sugar in the mixing bowl and drape a large, very light tea towel over the whole thing. This keeps the sugar from floating all over the kitchen and spares me from mixing it in batches.
- If the frosting is too thick for spreading or piping, add a few DROPS of milk or cream and mix again. I usually never have to.
Nutrition
If you made these, I’d love to hear how it turned out — leave a star rating and drop a comment below! It helps me out, and it helps other bakers know what to expect.
High-Altitude Pumpkin Butterscotch Cupcakes – Frequently Asked Questions
Why do I need a separate high-altitude version of this recipe?
Above about 3,000 feet, lower air pressure makes cakes and cupcakes rise faster and fall more easily, and it also speeds up moisture evaporation during baking. This version reduces the baking powder and adjusts the oven temperature so the batter rises at a more controlled pace and holds its structure — without the sinking or dry edges that using the sea-level recipe at altitude tends to produce.
Can I just use the regular recipe and eyeball the adjustments myself?
You can, but I’d rather save you the guesswork — that’s exactly what this version is for. If you’re curious about the reasoning behind the specific changes (leavening, temperature, and why weighing matters more up here), see the ingredient-weighing section above and High-Altitude Baking Adjustments.
I don’t have butterscotch morsels — what can I use instead
Chopped toffee bits or even white chocolate chips both work well in a pinch, though the flavor will shift slightly. Butterscotch morsels really are what makes this one taste like itself, so I’d only sub them out if you’re already at the store and out of options.
Can I use fresh pumpkin instead of canned?
Yes, as long as it’s well-drained. Fresh pumpkin purée holds more water than canned, and at this elevation, extra moisture in the batter is more likely to show up as a dense or sunken middle — so blot it well before measuring (or weighing).
Can I make these ahead or freeze them?
Yes — bake and cool the cupcakes completely, then freeze unfrosted in an airtight container for up to 2 months. Thaw overnight in the refrigerator and frost once they’re fully cooled to room temperature.
Is there a regular, sea-level version of this recipe?
Yes — see the original Pumpkin Butterscotch Cupcakes post, which also has the full walkthrough for the Halloween stencil-decorating trick.