Last Minute Mixed Vegetable Au Gratin

"I came up with this one day when I had an unexpected guest for dinner and needed a fast side dish, but was low on ingredients. It came out quite good, and my guest not only had 2 helpings, he was very happy to take the rest home. If you want to use your own fresh vegetable mixture, chop it up into somewhat smaller pieces."
photo by a user photo by a user
Ready In:


  • 4 cups frozen mixed vegetables
  • 2 slices bread, toasted to medium
  • 2 tablespoons butter, divided
  • 1 tablespoon light olive oil or 1 tablespoon vegetable oil
  • 14 cup finely chopped onion
  • 1 1 can cream of chicken soup or 1 can cream of celery soup
  • 13 cup milk
  • 34 cup shredded cheddar cheese, divided
  • 12 teaspoon mustard powder
  • salt and pepper


  • Preheat oven to 350.
  • Spray a 2 quart baking dish well with non-stick spray.
  • Cook the vegetables until just barely done; they will cook more in the baking process.
  • Drain and set aside to cool as you continue.
  • Using a blender, make the toast into crumbs; set aside.
  • In a medium saucepan, heat 1 tablespoon of the butter or margarine and the oil on a medium heat; saute the onions in the butter and oil until transparent.
  • Add the soup, milk, mustard powder and salt and pepper and cook, whisking very often, until the mixture is bubbly, thickened, and a bit reduced; remove from heat.
  • Put the vegetables in a large bowl, then stir in the sauce mixture, about 2 tablespoons of the bread crumbs, and 1/2 cup shredded cheese; blend well.
  • Spoon mixture into the prepared baking dish.
  • Melt the remaining 1 tablespoon of butter and combine well with the remaining bread crumbs.
  • Mix in the remaining cheese and sprinkle the mixture evenly over the vegetables.
  • Bake for about 30 to 35 minutes, or until the mixture is heated through and the top is browned.

Questions & Replies

default avatar
Got a question? Share it with the community!


Have any thoughts about this recipe? Share it with the community!


I enjoying cooking, baking and experimenting with new, ethnic, and out-of-the-ordinary recipes. I live in Pennsylvania with my crazy cat, Da Fuzz (aka Demoncat), who is spoiled beyond human comprehension.
View Full Profile

Find More Recipes