You can do a shepards pie, it's a nice comforting end to a cold day spent playing in the snow! Here's a recipe I found for the crock pot, and of course you can make any changes you would like to make it more to your liking and you might want to double or triple the recipe because it doesn't seem this will feed 25 people. Good luck and have fun!
--3 cups mashed potatoes
--1 lb ground turkey or beef
--2 cloves garlic, chopped
--2 cups frozen vegetables (I used roasted corn and peas)
--1 medium onion, chopped finely, or 1 T onion flakes
--1/2 tsp seasoned salt
--1/2 tsp onion powder
--1/4 tsp black pepper
--1/4 tsp paprika (then a bit more for garnish)
--1 cup water
--2 cups shredded cheese
The Directions.
I used a 4 quart crockpot---it was the perfect size. A larger will work, but it will cook faster.
Brown the meat and onion on the stove, and drain any fat. Toss the meat with the spices and garlic---I didn't but next time I'd probably put the garlic and spices in with the meat in the frying pan, it would be easier.
Spray the inside of your crockpot with cooking spray. Put the meat in the crockpot and stir in the frozen vegetables, and a cup of water. Add two cups of cheese on top. Press the mashed potatoes down on top of the cheese and meat. Sprinkle with a bit of paprika.
Cover and cook on low for 6 hours or high for about 3, then remove the lid and cook on high for 30 minutes to release the condensation and allow the potatoes to brown a bit on top. Everything is cooked already, so you're really just allowing the flavors to meld and the potatoes to crustify.
Someone will ask about using raw meat. I'm sure it will work, but I have a swimming-in-fat-and-grease phobia, so I didn't do it. If you are going to try, I'd cut the water down to 1/2 a cup and remember that the potatoes might not get the type of crust you are looking for unless you vent the crockpot with a chopstick or wooden spoon.