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Cook Out sells four peanut butter shakes, and the Cookout Peanut Butter Fudge milkshake is the lightest of them. At 765 calories and 91 grams of sugar, it undercuts the Reese's Cup shake by 129 calories and 24 grams of sugar while still delivering 21 grams of protein, fourth most on the menu. The 33.2 oz cup typically costs $3.99. Reviewers are split on whether it is balanced or peanut-heavy.

Is Peanut Butter Fudge balanced or peanut-heavy?
It depends on who is drinking. The fan reviewer behind cookoutmilkshakereviews.com gave it 15.5 of 17, calling it one of the best-blended, smoothest shakes on the menu with the chocolate and peanut butter evenly balanced, like a candy-coated peanut treat. Spoon University's Elon writer found neither flavor overpowering and called it thick, creamy and a hit with friends.
Mashed disagreed sharply. It ranked the shake 32nd of 37 and argued the peanut butter crowds out the fudge, so the chocolate richness gets lost. The Daily Meal sided with the fans, ranking it ninth of 41 on the strength of thick peanut butter swirls in smooth chocolate soft serve.
How do the rankings compare?
| Source | Format | Peanut Butter Fudge's position |
|---|---|---|
| The Talon (high school paper) | 2018, 43 shakes | 3rd |
| Spoon University, JMU | Top nine Harrisonburg shakes | 2nd |
| Viking Fusion | Student ranking of all shakes | One of the three best, behind Caramel Fudge |
| The Daily Meal | 41 flavors ranked | 9th |
| Mashed | 37 flavors ranked | 32nd |
The student rankings love it and the one food site that judged on peanut balance does not. Viking Fusion put it in the top three with Vanilla, though it said Caramel Fudge made it look insignificant.
How thick is it?
Thick enough that a Yelp reviewer reported barely getting it through the straw until it softened. The Daily Meal found extra mix-ins collect at the bottom of the cup, so the last spoonfuls hit hardest. Bring a spoon.
What happens when you add banana?
People like it. A TikTok reviewer ordered the shake with banana added, rated it 10 out of 10 and needed a spoon. Cook Out's own Peanut Butter Banana shake is the official version, at 864 calories and tied for the most protein on the menu.
How does it compare with Cook Out's other peanut butter shakes?
It has the lowest calories, fat and sodium of the four. Sodium is the biggest gap: 569 mg against 699 mg in the Reese's Cup shake, 130 milligrams less.
| Peanut butter shake | Calories | Total fat | Sodium | Sugar | Protein |
|---|---|---|---|---|---|
| Peanut Butter Fudge | 765 | 34 g | 569 mg | 91 g | 21 g |
| Fresh Peanut Butter | 847 | 45 g | 698 mg | 83 g | 27 g |
| Peanut Butter Banana | 864 | 43 g | 669 mg | 85 g | 27 g |
| Reese's Cup | 894 | 37 g | 699 mg | 115 g | 24 g |
Across the full menu it ranks 15th of 44 for calories, 7th for fat and 4th for protein. Its sugar sits 33rd of 44, 9.5 grams below the typical shake, and its cholesterol is 51 mg, among the lowest on the menu.
Is it safe for a peanut allergy?
No. Our allergen chart lists milk and peanuts for it. Shared equipment means cross-contact is a risk with every flavor, so people with a severe allergy should talk to the staff before ordering.
Is the Cookout Peanut Butter Fudge milkshake the balanced pick?
Yes, for anyone who wants chocolate and peanut butter together without the weight of Reese's Cup or the peanut-forward punch of Fresh Peanut Butter. Order it with a spoon: the thick swirls and the mix-ins that settle at the bottom reward the slow approach.
