Cleaning the oven doesn’t have to be an exhausting or chemical-heavy chore. With Nana’s simple method, you can achieve a spotless, fresh-smelling oven using just three everyday items: a dishwashing pod, a heatproof casserole dish, and water. This clever trick has been passed down through generations — and it works just as well today as it did decades ago.

To start, preheat your oven to 200°F (93°C). Fill the casserole dish with water and drop in one dishwashing pod. Then, place the dish on the middle rack and let the oven steam for about an hour. The gentle warmth activates the pod’s cleaning agents, loosening stubborn grease and baked-on residue. Once the cycle is done, turn off the oven, let it cool slightly, and wipe the interior clean with a soft cloth.

You’ll notice that most grime wipes away easily without scrubbing. For tougher spots, a gentle brush or a second round of steam does the trick. This natural, low-effort method not only saves time but also eliminates the need for harsh sprays and strong chemical cleaners that can irritate skin or leave behind fumes.

Used once a month, this routine keeps your oven looking new and performing efficiently. It helps prevent grease buildup, reduces smoke while cooking, and even lowers the risk of kitchen fires. Nana’s trick is a reminder that simple, safe solutions often work best — and in less than 90 minutes, your oven will shine like new without a single drop of toxic cleaner.