Most Costco shoppers never check one part of the store — a mistake that could be costing them hundreds

The best deals at Costco aren't necessarily where many shoppers are looking.

Jacquelyne Devine, a content creator from Pennsylvania who posts under the handle @costcojacque, spends a lot of her time investigating Costco offers. 

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While many Costco customers rush for the rotisserie chickens or bulk staples, she and other shoppers and fans, she said, have found the bakery to be the site of the warehouse's biggest bargains. 

She shared some insights from her perspective. 

Costco offers low-cost items in its bakery with prices that are tough to find elsewhere, Devine said.

This includes the Kirkland Signature 2-Pack Baguettes at $5.99 and the 12-count Kirkland Signature Butter Croissants, which typically sell between $5.99 and $7.99.

The past fall, the massive and seasonal pumpkin pie sold for $5.99.

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Devine described the pie as "a staple" in her house.

"I buy it for every holiday party," she said. "My family and I are always impressed by how good it is."

Devine called the filling "smooth and delicious," saying "it feels like a steal for the size and quality."

Buying in bulk allows shoppers to get more mileage out of favorite food items.

Costco's croissants are a favorite for Devine. 

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"I regularly use them to make chicken salad sandwiches using Costco's rotisserie chicken" for "an easy and affordable meal," she said.

"As for stretching them, I freeze anything we will not eat right away."

Devine said that when she takes the croissants out of the freezer, she microwaves them for 45 to 60 seconds.

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"I do the same with the muffins, and they hold up incredibly well," she said. 

The mother of three said Costco's sheet cake is a go-to for her. 

"Using the order form in the bakery, you can place your custom order in advance, or pick up one of the pre-made options," she said. 

The cakes, in her opinion, are "genuinely delicious," she said. 

Devine mentioned the "flavorful" raspberry lemon muffins. "They can be split in half to make them last longer."

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She also suggested the six-count Blueberry Caramelized Cheesecake Croissant, though this costs more per unit than the regular croissants.

To her, the item is worth trying because "it's indulgent and tasty."

Devine said people should "not be intimidated" by items sold in bulk. 

"With freezing, planning ahead and knowing what stretches well," the bakery offers "value and quality," she said.

"The backbone of the Costco bakery is volume, whether through the sheer size of a single item or the number of baked goods per package," notes Food & Wine.

Also worth noting: "Not every item" in the bakery is "a winner," according to Tasting Table — "because even America's favorite wholesale superstore can't do everything right."