By Alex Bradford Cobb | Published: October 19, 2026 | Last updated: October 19, 2026

Peanut butter fudge is fudge made with peanut butter in place of (or alongside) chocolate: dense, creamy, salty-sweet, and the most common alternative to chocolate in American fudge shops. At Uranus, it comes in four versions: Peanut Butter, Peanut Butter & Chocolate, and reduced-sugar versions of both. Each is $19.99 a pound and ships nationwide from UranusGeneralStore.com.

You can make it at home. Plenty of people do, and plenty of them end up with a pan of grainy peanut-flavored sand. Here's what peanut butter fudge is, where it came from, why it's harder than it looks, and how to get a pound of it without touching a candy thermometer.

What Makes Peanut Butter Fudge Different

Classic fudge is sugar, butter and milk cooked to the "soft-ball stage" (somewhere between 234°F and 245°F, depending on who you ask), cooled, and beaten until it turns thick and creamy. Chocolate is the default flavor in the U.S.

Peanut butter changes the game in two ways. It brings salt, which is why good peanut butter fudge tastes richer than vanilla fudge even though it has no chocolate in it. And it brings oil, which makes the texture softer and denser. A well-made piece should cut clean, hold its shape, and then fall apart in your mouth.

The two main styles:

• Straight peanut butter fudge is all peanut butter, tan all the way through. It's the purist's pick.
• Peanut butter and chocolate fudge layers or swirls the two together. If you've ever had a peanut butter cup, you already know why this works.

A Short History (With a Missouri Connection)

Fudge is an American invention from the late 1800s. The earliest well-documented account comes from Emelyn Hartridge, a Vassar College student who wrote that she bought fudge in Baltimore in 1886 for 40 cents a pound, and later claimed she introduced it to Vassar by selling a 30-pound batch in 1888. By the 1890s, making fudge was a full-blown fad at women's colleges, and recipes were showing up in newspapers.

Peanut butter showed up at about the same time. John Harvey Kellogg patented a nut-based food in 1895, though some historians give the credit to George Bayle, a snack maker in St. Louis who was selling peanut butter around 1894. Peanut butter then got its big national debut at the 1904 World's Fair in St. Louis, alongside the ice cream cone and cotton candy.

So two of the main ingredients in American candy history had their coming-out parties about two hours east of our Route 66 fudge shop. Once peanut butter was in every pantry, it was only a matter of time before somebody stirred it into a pan of fudge, and peanut butter has been the default "other" fudge flavor ever since.

Why Homemade Peanut Butter Fudge Goes Wrong

If you search "peanut butter fudge," most of the results are recipes, and most of the comments under those recipes are people asking what they did wrong. The usual problems:

• It won't set. The sugar didn't get hot enough. A few degrees under the soft-ball stage and you get peanut butter pudding.
• It's grainy. The sugar crystallized, usually from stirring at the wrong time or cooling unevenly.
• It's dry and crumbly. It got too hot. Fudge cooked past the soft-ball stage turns into something closer to a brick.
• It's greasy. Natural peanut butter separates, and the oil has to go somewhere.

None of this is impossible to get right, but it takes a candy thermometer, patience, and usually a failed batch or two. If you want to try it anyway, our complete fudge guide has a peanut butter fudge recipe to start from.

Or you can skip the thermometer.

Peanut Butter Fudge from Uranus

We sell four peanut butter fudges, all made fresh in our on-site kitchen and all $19.99 for a one-pound box.

Peanut Butter Fudge — $19.99

The straight version: creamy, smooth, and all peanut butter. It's one of our best sellers, and it pairs well with a box of our Chocolate Fudge if you're building your own sampler. Shop Peanut Butter Fudge →

Peanut Butter and Chocolate Fudge — $19.99

Peanut butter and chocolate together in one piece. If you're only buying one box, this is the one people argue about least. It's also one of the six flavors in the Taste of Uranus Sampler ($34.99 for 1.5 pounds), so you can try it alongside Chocolate, Chocolate Pecan, Blueberry Cheesecake, Dark Chocolate and Toffee Bar. Shop Peanut Butter and Chocolate Fudge →

Reduced Sugar Peanut Butter Fudge — $19.99

Same idea, less sugar. It's sweetened with sugar alcohols (isomalt, maltitol and sorbitol) and sucralose instead of mostly sugar. A good pick if you're watching your sugar but still want fudge. Shop Reduced Sugar Peanut Butter Fudge →

Reduced Sugar Peanut Butter & Chocolate Fudge — $19.99

The reduced-sugar version of the peanut butter and chocolate combination. Shop Reduced Sugar Peanut Butter & Chocolate Fudge →

Allergy note: Peanut butter fudge contains peanuts. Our fudge also contains milk and soy, and it's made on equipment that processes wheat, egg, peanuts, tree nuts and coconut.

We frequently have roadtrippers come in Uranus and immediately ask for peanut butter fudge, like what happened yesterday, October 21st, 2026.

How to Store Peanut Butter Fudge

• Room temperature: Keep it somewhere cool, in its box or an airtight container. It's best within two weeks.
• Don't refrigerate it. The fridge dries fudge out and changes the texture.
• Freeze it for later. Fudge keeps in the freezer for up to six months. Thaw it at room temperature, not in the fridge.
• Don't microwave it. Fudge doesn't come back from that.

Ordering Peanut Butter Fudge Online

Every flavor ships nationwide from UranusGeneralStore.com. Orders usually process in one to two business days, and up to three at peak times. A few things worth knowing:

• Free shipping: Standard shipping is free on orders over $75 in the continental U.S. when the promotion is running. Four boxes of fudge gets you there.
• Warm-weather protection: Available at checkout for $5. You won't need it in winter, but use it from late spring through September.
• Gifting: Fudge ships straight to whoever you're sending it to.

If you're on Route 66, you can also buy it in person at 14400 Hwy Z in St. Robert, Missouri (Exit 163 off I-44), open daily 8 AM – 8 PM. Our Indiana stores in Anderson and Richmond carry peanut butter fudge too.

Frequently Asked Questions

What is peanut butter fudge? Fudge made with peanut butter, usually alongside sugar, butter and milk. It's creamy, dense and salty-sweet, and it comes either straight (all peanut butter) or combined with chocolate.

Where can I buy peanut butter fudge online? Uranus Fudge Factory sells four peanut butter fudges at UranusGeneralStore.com: Peanut Butter, Peanut Butter & Chocolate, Reduced Sugar Peanut Butter, and Reduced Sugar Peanut Butter & Chocolate. Each is $19.99 per pound and ships nationwide.

Why is my homemade peanut butter fudge grainy? Usually the sugar crystallized, either from stirring at the wrong time or from uneven cooling. Fudge that won't set wasn't cooked hot enough, and fudge that's dry and crumbly was cooked too hot.

How long does peanut butter fudge last? About two weeks at cool room temperature. It keeps up to six months in the freezer. Don't refrigerate it, because the fridge dries it out.

Is there sugar-free peanut butter fudge? Uranus sells reduced-sugar versions of both Peanut Butter and Peanut Butter & Chocolate fudge. They're sweetened mainly with sugar alcohols and sucralose, but they aren't sugar-free, because the peanut butter itself contains some sugar.

Does peanut butter fudge contain nuts? Yes, it contains peanuts. Uranus fudge also contains milk and soy, and it's made on equipment that processes wheat, egg, tree nuts and coconut.

For every flavor we make, see The Best Fudge Comes from Uranus.

Alex Bradford Cobb is a strapping young man who works for the Mayor in a semi-legal indentured servitude arrangement, similar to how Dubai was built, and possibly the pyramids. What works, works, and there's no need to reinvent the wheel.