Vegan tater tot hotdish is hearty, delicious, and a top dinner request in our house. This family-favorite casserole is a real crowd-pleaser and the ultimate comfort food that's perfect for any night of the week.
Cook the beefless ground over medium heat until no pink remains and set aside.
Heat the butter in a 12-inch cast-iron skillet. Add the onion and mushrooms and sauté over medium heat until softened - about 5 minutes.Note: If you don't have a cast-iron skillet, just use any skillet and then transfer the mixture to an oven-safe casserole dish before baking.
Add the flour and continue to cook for another minute.
Slowly add the milk, ¼ cup at a time, whisking continuously. Add the onion and garlic powder. Bring the mixture to a boil and let simmer for a few minutes to thicken. Taste and add salt and pepper, if necessary.
Add the beefless ground and the corn to the mixture and stir to combine.
Arrange the frozen tater tots on top and transfer the skillet to the oven. Bake for about 30 minutes or until bubbly and tots are golden brown.