Crock Pot Mac and Cheese

I made this up once for a pot luck at my husband's work and it was sooo creamy and good! It has a smoky flavor from the smoked Gouda cheese, but you can substitute plain Gouda, or any cheese really and it would be just as good! (measurements are not *exact* but this is really a fool-proof dish. I can't remember the exact amount of water I added, so let it cook for a while before you add more water if needed. Again, any cheese combinations would work for this recipe. I even added pepper jack once and it was really good!)

Crock Pot Mac and Cheese

1-8 0z. pkg. Cream Cheese (low fat works fine)
2 C. macaroni noodles, uncooked
1 C. grated Cheddar cheese
1/2 C. grated Smoked Gouda (in gourmet cheese section at grocery store)
1 C. Monterey Jack Cheese
1 Tbsp. Ground Mustard
1 Tbsp. corn starch mixed with 1/4 C. water
2 C. milk
about 4 C. water (enough to just cover the top of the ingredients)
Salt and pepper
*optional- 1 C. crumbled, cooked bacon (this is delicious!)

Add all ingredients to crock pot. Cover and cook on low for 7-8 hours, high for 4-6 hours. Check consistency of sauce before serving, if too thick add milk or water, if too thin mix more cornstarch and water and let thicken for a few minutes before serving.