Bury your knot between the top and backing in the batting the way quiltingnonnie described so well above.
Where you come up with your needle will be the top of the left hand side of the V. Then decide where you want the top of the right hand side of the V to be. Put your needle down through all three layers at the point where the top of the right hand side of the V will be, holding the thread with the thumb of your left hand (if you're using the needle with your right) so that the thread is under your needle.
Come up at the bottom of the V. Make an anchor stitch at the bottom of the V but don't go through all three layers, carry your thread through the batting. Come up where you want the top of the left hand stitch to be and repeat.
The only time you go through all three layers is when you are making the right hand side of the V. The back of the quilt will just have one single stitch( where you make the right handside of V) as you are carrying the thread through the batting when you finish one stitch (anchor) and move to start the next one.
Hope this helps.