Oh dear @ tub of sour cream 
. My parent's golden once stole an entire Stilton one year. That was a fun few days of poop scooping.
Ok so this is how I have done it (always a work in progress though 
).
Basically you have to make the dog going to its bed while you are eating/cooking a potentially more rewarding experience than mithering you at your ankles, or jumping up/stealing food.
If you use a clicker it's easier but if not you can still do the same thing.
Get EXTREMELY high value treats for your dog. Kibble pfft. Cheese, liver cake, frankfurters whatever floats its boat.
Have dog away from but near bed. Using food lure dog onto bed. When dog gets onto bed click and treat. Repeat. Lots.
When the dog has 'got' that going onto the bed elicits a click and a treat you can add in a verbal cue. I use 'In your basket'.
So lure dog onto bed with cue 'In your basket' click and treat. Repeat. Lots.
Then (and this is the tricky bit for the dog) take away the lure element but keep the verbal cue. So 'in your basket' and the dog should have a stab at going into the basket to see if that elicits a click. If it doesn't then go back to doing luring.
Next move yourself and the dog away from its bed. Little bit at a a time. "In your basket", when dog hits the bed. Click and treat (you may have to improve your food lobbing skills).
Take it all over the house and garden. Right out the back give the dog "In your basket" and if you have reinforced it enough the dog should pelt back to its basket.
Increase the time your dog has to spend in it's basket before it gets a reward.
Now and then give your dog a jackpot reward for staying in it's bed (I find a rainstorm of torn up cheese strings onto the dog in its bed works very well).
When you have an A1 response to "In your basket" to can start to tail off the treats. It actaully makes the response stronger for the dog not treating every time (see Don't Shoot The Dog book by Karon Pryor for explanation of this, is basically to do with gambling, interesting stuff).
Whenever you are eating or doing food prep send the dog into its bed. Reward now and again.
This only will work if you never give tidbits to the dog at the table or when you are cooking. It HAS to be more rewarding for the dog to be in its basket than begging/stealing.
hth