Choose pears that are not too ripe, as they need to hold their shape and bear the weight of the toppings.  There is no need to peel the pears; the skin will add texture and color to your sliders.  If preparing in advance, brush the pear slices with a little lemon juice to prevent browning.  Adjust the quantity of goat cheese spread based on the size of your pear slices and personal preference. A little goes a long way!