Ham and Swiss Impossible Pie is an easy, from-scratch recipe with savory ham, melty Swiss cheese, and a homemade crust that forms as it bakes. Perfect for a simple weeknight dinner or lunch.
Preheat the oven to 350°F. Grease a 9-inch pie plate with nonstick spray or butter.
Heat butter in a skillet over medium heat. Add the onion and sauté for about 5 minutes, or until soft and translucent. Remove from heat and let cool slightly.
In a large bowl, whisk together the flour, milk, eggs, Dijon mustard, baking powder, salt, and pepper until smooth (a few small lumps are okay). Stir in the ham, shredded Swiss, and sautéed onions.
Pour the mixture into the prepared pie plate. Bake for 35–40 minutes, or until the center is set and the top is golden brown. A knife inserted in the center should come out clean.
Let the pie sit for 5–10 minutes before slicing. Serve warm, or enjoy leftovers cold or at room temperature.
Notes
This Ham and Swiss Impossible Pie is a great way to use up leftover ham. Cut it into small cubes so you get plenty of flavor in each bite.
You don’t need Bisquick for this recipe. The homemade mixture of flour and baking powder works just as well, giving you full control over the ingredients.
Swiss cheese is classic here, but feel free to mix in Gruyère, cheddar, or even mozzarella for a different flavor twist.
The pie is just as tasty served warm from the oven as it is chilled the next day. Try a slice cold for an easy lunch.
To check if it’s done, insert a knife in the center. If it comes out clean, the pie is ready to enjoy.
For a little garnish, sprinkle fresh parsley or chives over the top before serving. It adds a nice pop of color and flavor.
Leftovers can be stored in the refrigerator for up to 3 days. Reheat in the oven or microwave, or enjoy cold straight from the fridge.