Pre-heat oven to 375°.
Cream butter and sugar. Add eggs, caramel extract, apple butter, and milk. Mix well.
Add dry ingredients, including baking powder, salt, apple pie spice, and flour, to mixture. Mix well.
Wash pears, and peel, core, and chop. Add to mixture.
For crumble topping, mix all ingredients together.
Add paper liners to muffin tin and fill with dough. Crumble topping on top.
Bake muffins at 375° for about 25-30 minutes, or until muffins begin to turn golden on top and toothpick comes out clean.
Serve and enjoy!