Cookie butter beat out options like Mandarin Orange Chicken and Joe's Diner Mac 'n Cheese to snag the No. 1 spot.
Sourdough triumphed over year-round options like the Soft Pretzel Stick and Ciabatta Rolls and the seasonal Almond Kringle and Chocolate Babka.
Price: $2.99 - $3.49
Even the infamous Two Buck Chuck lost to the seasonal beverage.
Dark chocolate is always hot at Trader Joe's, with Sea Salt & Turbinado Sugar Dark Chocolate Almonds and Dark Chocolate Sea Salt Caramels also in contention for customers' favorite candy.
Trader Joe's has a varied and affordable specialty-cheese selection, but the Unexpected Cheddar Cheese is the best of the best. Runners-up include Double Cream Brie, Cheddar Cheese with Caramelized Onions, Creamy Toscano Cheese Soaked in Syrah, and Cranberry Chevre.
The humble ketchup won customers' hearts, beating quirky options like Green Dragon Hot Sauce and Sriracha and Roasted Garlic BBQ Sauce.
Trader Joe's has a broad selection of frozen foods, including Joe’s Diner Mac ‘n Cheese, Chocolate Croissants, Extra Fine French Green Beans, and Chicken Tikka Masala.
The meatless Soy Chorizo beat out meaty options like Chicken Sausage, Uncured Apple Smoked Bacon, and Traditional Carnitas.
Trader Joe's bananas are $0.19 — and have been since 1999.
In addition to basics like baby spinach and butter lettuce, arugula was also more popular than the seasonal Harvest Blend with Baby Kale, Pumpkin Seeds, Pumpkin Cornbread Croutons & Pumpkin Vinaigrette.
Other popular snacks in 2015: Sweet Potato Tortilla Chips, Organic Corn Chip Dippers, Peanut Butter Filled Pretzels, and Olive Oil Popcorn.
Trader Joe's had a plethora of pumpkin items this year, but at the end of the day, it was the simplest option that took home the prize.
All prices according to the most recent Trader Joe's fliers.