I have a way to add more than $2,000 to your annual household income (and there’s no pay increase needed).

A new study from the Natural Resources Defense Council (NRDC) finds Americans now throw away 40 percent of their food each year, at home and in restaurants. That equates to $165 billion in wasted food each year.

The typical family of four ends up throwing out nearly $2,300 in food annually.

We’re all guilty of this. I think about myself in my own life. I was going to serve my kids some milk from the fridge, and it had that rank smell. So I poured out about 20 percent of the gallon. I did that out of habit.

Then I think about how many times things go out of date or spoil at my house. I ate a banana last night that was marginal. There was a peach that went unloved, so I threw it out. We do this all the time. All of us.

In sit-down restaurants, the portions we have here in the United States are monstrous. I mean, one of our side dishes would feed a family in the rest of the world. That’s why I’ve long recommended sharing an entree among two people. You can have less food, reduce your calories and trim your bill — though a plate charge will typically apply.

Meanwhile, websites such as SuperCook.com and MyFridgeFood.com can help you cook a meal out of just what you have on hand in the kitchen. Just visit these sites, enter what it’s in your fridge, and you’ll get a meal plan. There’s also an iPhone app called What’s in My Fridge that does the same thing.

Take these tools and save that food. Use it and serve a meal. We’re talking about thousands of dollars a year that stays in your pocket.