Just for fun, not that you would need to know very often, but I did this for supper this evening.
About 9 am, take two 10lb bags of pinto beans, wash them, pick out the broken or yucky looking ones and the ones that aren't pintos and place them in two turkey roasters. (The electric kind like you cook a turkey in that sits on the counter top. Add water until the roaster pan is full. Sprinkle quite a bit of salt and pepper on them. Add some bacon grease or ham. (I used ham tonight.) Turn roaster on to about 400 degrees. Let cook all day, stirring occasionally and adding water as needed. This is actually a little too much for the two roasters so have a crock pot handy to move some of the beans to if it seems too full.
While the beans are cooking...
Make the Brownies, follow the directions on the boxes. Make two boxes of 4 packages of brownie mix. Pour in two half sheet cookie sheets. Bake as directed.
Next take 20 lbs. of potatoes, wash and slice thinly. On three half sheet baking pans melt about 4 sticks of butter each (this was a little much butter, you could use less). Toss the potatoes in the butter and spread on the baking sheets, preferably only one layer thick. Bake in oven until, brown and crisp, about 325 degrees. Stir once or twice while baking. You will bake and empty each pan and refill it, using the same butter. When you remove them from the oven, have a large aluminum pan lined with paper towels and spoon the potatoes into it, leaving most of the butter for the next potatoes. Salt generously. Keep warm in oven on low.
Next, using cornmeal mix make eight times the recipe on the package. Pour on to two half sheet baking sheets and bake as directed.
When the beans are almost done cut the brownies and the cornbread into 120 servings. Put out butter, sliced onion, and jalepenos for toppings.
Tada! You have just cooked for over 100 people and it was yummy home cooking.