Inflation isn't the only thing pushing up the grocery bills of households across the country. A lack of awareness of the spending traps is costing them too.

The supermarket is where you go for the ingredients to prepare an affordable meal. But it's also a place where you can overspend if you aren't careful. That's particularly true if you're squarely focused on saving time and effort. "When it comes to groceries, convenience costs," says Brian Vines, deputy editor of special projects at Consumer Reports. "You can expect to pay a premium when supermarkets help you cut corners in the kitchen.