Squash Casserole

Well, I promised I'd post it, so here it is! It was really good, but I can't promise these are correct amounts for the ingredients. If it looks like it needs a little more or a little less, than do so! :-)

Squash Casserole
3 medium yellow squash, washed and diced
1 green bell pepper, chopped
1 yellow onion, chopped
2 Tbsp. butter
1/2 c. milk
1/2 c. sour cream
1/2-3/4 c. of cheese (I did about 1/3 c. of shredded pepperjack and a thick slice of provolone cut in pieces, but just about any cheese would be good).
1 large handful of crackers (I used sundried tomato triscuits, but ritz or saltines would work too).
In a large saucepan, boil the squash for 10 minutes or until tender. Meanwhile, in a skillet, sautée the pepper and onion in olive oil until tender. Drain the squash and return to saucepan. Add butter and milk and mash with a potato masher over low heat. Once it is about the consistency of chunky mashed potatoes, remove from heat and add the pepper, onion, sour cream and cheese. Add as much cheese as you prefer. Pour into greased casserole dish or 8x8 pan and bake in a 350 degree oven for 15 minutes. Turn oven to Broil and broil until the top is brown (3-5 minutes).