first let me say my crock pot is the big oval one.
put some boneless skinnless chicken breasts in the bottom of a crockpot. sprinkle on onion powder, garlic powder, seasoning salt and some pepper. put half cup of water sprinkled across the tops of the chicken breasts. close lid and cook on low for about 8 hurs. chicken is spectacular.
I usually use a pork roast that is about 3-4 lbs for my family of 6.
make 2 scrunched up pcs of aluminum foil about the size of a 6 inch long lincoln log lay those in the bottom of the crock pot and set the pork roast on top. put garlic and onion powder and salt and pepper on top. slice an onion and layer than on top also. pour about 1/4 cup of water across the top. close and cook on low for about 5 hours. open crock pot and put sour kraut at one end and some peeled potatos in the other end. I usually quarter the potatos and then they cook better. leave for another 4 hours or so and dinner is wonderful.
you can brown your hamburger in the crock pot by putting it in on low late at night before you go to bed. in the morning it is done and you can proceed with the other parts of your recipe (chili, soup, etc...) good luck.