To me, there is nothing better, than opening my front door and smelling the aroma of my dinner cooking in my slow cooker or crock pot.
When I had five children at home, it was the most used cooking utensil in the kitchen, and still is. Although I am a single person now, I still use my tried and true friend, the crock pot.
Over the years, I have found, these few tips improve my crock pot cooking joy.
 Using the right size crock pot, for the job. I have three different size crock pot cookers, because I never want to over fill the cooking insert. It would only cause spillage or under cooked food.
 Planning ahead by doing the chopping of your vegetables the night before and storing them in the refrigerator is the secret to quickly getting the meal together before leaving for work. DO NOT, store the vegetables in the crock pot insert. Starting with a cold insert will only add to the cooking time. So store the chopped veggies in an air tight container overnight, then place them in the cooker in the morning.
 You should prepare your meat before hand, too. Remember you are cooking with low heat, so you do not want to have you meat to be too thick, as it may not reach a safe cooking temperature. A piece of meat no more than 2 inches thick, should work great. Keeping your whole chicken or chicken parts to about 2-3 pounds works well, also. Do a spice rub on your meat of choice, cover or wrap, then place it in the refrigerator with your vegetables.
 DO NOT lift the lid on your crock pot, until you are within the last 30-45 minutes of the cooking time. It will only release the heat and interupt the cooking process.
You can check for doneness or add spices in the last 30 minutes of so but at any other time, you are doing more harm than good.
 If time permits, add more flavor to your meal by searing your beef. Heat a heavy skillet to hot, add a tablespoon of oil, then place the meat in the hot skillet, listen for the sizzle. Cook on both sides about 1-3 minutes each, depending on the thickness of your meat. Then place the piece of meat into your crock pot cooker and add any juices from the skillet before placing the lid on the slow cooker and starting your cooking time. You will get a richer broth and fuller flavor from the beef by doing this extra step.