Photo: 12 Tomatoes Creative Team

Frugal doesn’t have to mean flavorless, and that’s what this recipe for 1940s Cheese Potato Onion Casserole is here to prove! A simple set of ingredients goes a long way to create a dinner or side dish brimming with hearty and satisfying comfort food. 

Photo: 12 Tomatoes Creative Team

Garden staples of the 40s became the main stars of the dinner table. A bit of rationed butter and cheese tied these veggies together to make a casserole that rivals your bowl of holiday mashed potatoes. 

After the potatoes are cooked until fork tender, they’re drained, mashed, and seasoned with thyme, salt, and pepper. The sliced onions are sautéed until soft and golden, and then mixed into the potatoes. 

Photo: 12 Tomatoes Creative Team

Spread evenly into a prepared casserole dish; the casserole gets a topping of cheese before being popped into the oven. 

Photo: 12 Tomatoes Creative Team

Once golden and bubbling, the 1940s Cheese Potato Onion Casserole is ready to serve! 

Photo: 12 Tomatoes Creative Team

The time in the oven is a magical period, further developing the sweet notes of the sautéed onions and marrying the onions further into the potatoes. 

Photo: 12 Tomatoes Creative Team

Cheese melts into every nook and cranny on top of the casserole, giving it a great gooey and creamy contrast to the aromatic and flavorful ingredients below. 

Photo: 12 Tomatoes Creative Team

Served with a side of leafy greens, this can make for a great meat-free main meal, or it can play a great side character to a protein like meatloaf or roast chicken. 

It’s so satisfying that it’s hard to believe that this was a part of a 1940s rationing menu!