It's no secret that Americans today are eating far larger amounts of food than the generations before them. We chow down at restaurants on hefty platters of pasta, pizza and other edibles that could easily make up two or three separate meals.

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At the grocery store, portion sizes of our favorite snack foods have also ballooned over the past 20 years. The average chocolate chip cookie used to run 55 calories; now, it’s 275 calories. And those extra calories add up quickly.

Can you guess how many more calories are in some of America’s most popular foods? Take the quiz below to test your “Portion Distortion” knowledge.