In a pan on the stove top melt the butter and sugar and gently heat. When it starts to caramelise toss in all the pear slices and agitate and stir to coat well and continue for a few minutes to soften and colour the pear slices.
In a bowl place all the batter ingredients and beat with a hand or electric whisk to combine to a thick batter.
Place the caramelised pears evenly over the base of the buttered pie dish and then pour over the thick batter.
Place in oven and cook for around 35 minutes.