for cream cheese filling combine cream cheese, brown sugar and maple flavoring
for muffins combine flour, brown sugar, walnuts, baking powder, cinnamon, baking soda and salt in a large bowl. combine eggs, pumpkin, evaporated milk, oil and maple flavoring mix well. add pumpkin mixture to flour mixture, mixing until just blended.
spoon into 12 greased muffin cups. cups will be very full. dollop 1 heaping tsp of cream cheese filling into centre of each cup, pressing into batter slightly.
sprinkle nut topping over muffins
bake in preheated 400 degree oven for 20 to 25 min. cool in pan for 5 min remove to wire rack to cool completely.