As a former Costco employee, there are a lot of must-buy products and delicious staples I get at the chain each week. Jesus Sanchez Garcia I worked for Costco for eight years, and I still regularly shop there for my six-person household. Typically, I buy fresh produce there, like Windset Farms Roma tomatoes and Good Life Organic squash. Kirkland Signature triple-chocolate muffins, chicken breasts, and free-range eggs are staples, too. I spent eight years working at Costco , and during that time, I've shaped my grocery list to take advantage of the bulk quantities the warehouse store offers at discounted prices. Costco shopping trips have become a weekly habit for my six-person household to ensure we're all happily fed, no matter our dietary preferences. Here are a few of my go-to Costco staples and favorite buys. Windest Farms Roma tomatoes help me switch up my weekly meals. I use Windest Farms Roma tomatoes in a lot of dinner recipes.…