I'm a die-hard Costco fan with an executive membership. Here are the 9 items I can't leave the store without.

Rolled oats and Japanese barbecue sauce are two items I never leave Costco without. Gabrielle Lenart I've been shopping at Costco for years and rely on the store for nutritious and affordable meals. As an executive member, I love buying the Amylu products and Bachan's Japanese barbecue sauce. I always stock up on Kirkland Signature products like organic chicken breasts and Greek yogurt. Some people are horse girls, but I proudly refer to myself as a Costco girl. I grew up going to the store with my mom in the early 2000s and loved snacking on the free samples. As I got older, I knew I was in a serious relationship when my partner and I got a Costco executive membership together. Now, as I'm starting my own family, I still turn to Costco for nutritious and affordable meals. I make weekly trips to the wholesale retailer, and although I always grab the rotisserie chicken, there are (at least) nine other items that I simply cannot leave the store without. Here are a few of my favorite items to buy at Costco. I always pick up a few Amylu products. Gabrielle Lenart Amylu is my favorite brand from Costco. As a home cook and food scientist by trade, I prioritize making homemade meals weekly. But trust me when I say this brand is worth buying. All of Amylu's products are filled with ingredients I'd use if I were making them from scratch. I use the chicken meatballs with basil and Parmesan for lunch bowls and the organic maple chicken patties to bump up the protein in my breakfast. I love Costco's organic peanut butter. Gabrielle Lenart This creamy, natural, organic peanut butter only contains two ingredients: peanuts and salt. I love that the Kirkland Signature peanut butter doesn't don't have an oily, oxidized aftertaste like others on the market. We love adding our own flavors to the Kirkland Signature Italian sparkling mineral water. Gabrielle Lenart The Kirkland Signature Italian sparkling mineral water is a staple in my house. We like to flavor it ourselves by adding lemon, lime, or pomegranate molasses to make our own beverages. However, it's also perfectly refreshing on its own. Kirkland Signature organic chicken breasts are the backbone of my meal prep. Gabrielle Lenart Although Costco offers great, affordable options for chicken breasts, thighs, and drumsticks in value packs, I find the organic variety is often higher quality. These chicken breasts are the backbone of my meal prep. As soon as I arrive home, I marinate and freeze them so that when they defrost, they're ready to go. Even my dog loves the Kirkland Signature plain Greek yogurt. Gabrielle Lenart Costco has a variety of great yogurt options. However, my favorite is the enormous container of plain, non-fat Greek yogurt because everyone in my household — including my dog — can enjoy it. I like to flavor it in batches and can sweeten it myself since I usually pile on the toppings. I also use this as a swap for sour cream, or as a base for my Ninja Creami. I use rolled oats for oatmeal and baking. Gabrielle Lenart I make oatmeal all year long, but I also use rolled oats as a base for baking to amp up the fiber. The oats can be used whole, but sometimes, I blend them to make my own oat flour. In a pinch, it's also ideal for a soothing bath. The Kirkland Signature Parmigiano-Reggiano is a versatile staple. Gabrielle Lenart This huge wedge of Parmigiano-Reggiano is worth its weight in gold. We shave it over our salads and pasta dishes but keep the rind for brothy beans, homemade marinara sauce, and soup stock. I like to grab a pack of the Columbus hickory-smoked turkey bacon. Gabrielle Lenart The Columbus hickory-smoked turkey bacon is another one of my favorite items to buy at Costco. It comes in a pack of four, and we usually freeze each one until we're ready to use it. We like to bake it on a sheet tray lined with parchment paper. This bacon is great for making breakfast burritos or for when we're serving a crowd. Bachan's Japanese barbecue sauce makes cooking flavorful meals easy. Gabrielle Lenart Bachan's Japanese barbecue sauce is super versatile and cuts my time in the kitchen in half. It works as a marinade, a dip, and so much more. It's an easy way to pack a punch of sweet and savory goodness into any meal. We like to use it on all our proteins, from chicken to tofu. This story was originally published on March 24, 2025, and most recently updated on October 15, 2026. Curious to know what other shoppers put in their carts? Check out our other Costco diaries here. Read the original article on Business Insider

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