The food-at-home index rose by 13.5% since last year, according to Consumer Price Index's most recent data.
Typically, when shopping on a budget, the common advice is to use coupons, says Felicia Porrazza, a registered dietitian nutritionist based in Pennsylvania.
While coupons can be useful, sometimes using them can encourage people to buy things they don't need or won't use, she says.
"I usually suggest using coupons for things you typically buy, and not for things that you're like 'Oh, I have a coupon for it,' which can also add to the grocery bill," Porrazza says.
And though methods like shopping in season and buying groceries locally are effective, they're not the only ways to save money.