Tonja Engen is the Culinary Product and Content Manager at Land O’ Lakes. She develops ... such as onions or garlic," says Engen. To keep the butter from spoiling, it's important to keep the ...

Despite my love for butter, I realized I had no idea how long it could be left unrefrigerated, so I reached out to Tonja Engen, culinary content specialist at Land O' Lakes, for some answers.