High Altitude Brownie Recipe





Introduction: High Altitude Brownie Recipe

About: I work at instructables by day, and turn into a stitch witch by night. follow me on instagram @jessyratfink to see what i'm working on! ^_^

These brownies are fudgy and amazing - with a great crinkly-crunchy top and perfectly chewy edges. I've made this recipe a few times now, so I figured I should share them here. And best of all, these brownies are made with cocoa so they're super easy!

I found this high altitude brownie recipe on The Bake-Off Flunkie blog (she has lots of other yummy stuff, too!) and fell in love after the first time I made them.

P.S. For those of you at not-8000-feet-altitudes, try adding an additional 1/2 teaspoon of baking powder to the brownies! I can't test it myself, but I know it'll take you guys a little less time to bake these.

Step 1: Ingredients + Tools


  • 1 1/4 cups all purpose flour
  • 2/3 cup unsweetened cocoa powder
  • 2 cups sugar
  • 1/2 teaspoon salt
  • 1/2 teaspoon baking powder
  • 1/2 cup melted butter (cooled) OR 1/2 cup canola oil
  • 1/4 cup milk of choice
  • 3 large eggs
  • 1 teaspoon vanilla extract

I've always used canola oil in these and they turn out fantastic, so I'm sure butter would be even better!


  • 9x13 inch baking pan
  • aluminum foil
  • cooking spray
  • an oven set to 350 F / 175 C

Step 2: Mix Up the Wet and Dry Ingredients and Preheat the Oven

In a large bowl, combine the sugar, cocoa powder, salt, flour and baking powder. Mix until nice and homogenous.

Note: to properly measure the cocoa and flour correctly, spoon the ingredients into the measuring cup and then use a butter knife to level them off. If you scoop, you'll pack too much into the cup!

In a measuring cup, combine the milk, vanilla, oil or butter and eggs and whisk well until you can't see any big flecks of egg yolks.

Step 3: Combine Wet and Dry

Pour the wet ingredients into the dry ingredients and mix well with a spatula. You want to mix just until you don't see any dry bits. Don't over mix trying to get every single lump - the brownies will come out tough!

Step 4: Prep Your Pan

This is optional, but I find it really helpful. Brownies can be tricky to get out of the pan, so I like to line my pan with aluminum foil and then spray it with cooking spray. It makes getting them out of the pan after they've cooled very easy. :)

Step 5: Baking

Pour the batter into your prepped pan and smooth it out with a spatula. Pop the brownies into a 350 F oven for 30 minutes.

During this time the brownies will rise quite a bit and then sink everywhere but the edges.

The middle of the brownies will still be fairly soft, but they'll firm up as they cool. I say this because they will look underdone, but they ain't. ;)

Step 6: Cool and Enjoy!

Once the 30 minutes are up, pull the brownies out and let them cool in the pan on a baking rack for at least a half hour. An hour is best!

You'll know they're cool enough once you can easily lift the aluminum foil and the brownies don't bend in the middle.

If you make these, I'd love to know what you think :D



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    The recipe was very easy & worked great- allowed them to cool in the oven for a bit after cooking & they set & cut well

    Climb the mountain for brownies! lol

    Can you make it without eggs?

    You should try this recipe with coconut oil. Extra yummy :) I like the suggestions of the extra egg yolk, espresso, and dark chocolate chips It'll be fun trying everything out! Thanks for the great recipe and add-ins.

    Thanks for a great recipe. Just wondering if you've ever tried adding chocolate chips (dark chocolate) for a bit more texture. Also, would decreasing the eggs to two, or even one, make them come out fudgier?

    1 reply

    I haven't! The only thing I really do different when I make them is to add 1/4 teaspoon of instant espresso. It makes them taste very much like dark chocolate and I love that. :)

    I'd honestly recommend adding one additional egg yolk if you want them extra fudgy, too.

    Right! My brain obviously shorted while writing that. ;)

    Updating it with the right word now - thanks for commenting!

    nice. can you update with the colorado recipe? :)

    I was wondering where the cannabutter was... high altitude. :)

    I find that lining the tin with baking paper eliminates anything sticking, but the brownie edges against the paper aren't so neat anymore and need trimming with a knife.

    1 reply

    I also expected "colorado" brownies

    mmmm delicious! Thanks for sharing!

    Perfect recipe :)