Combine the oats, spices, and baking powder in a medium bowl.
Beat the egg in a second bowl. Stir in the milk, vanilla, and syrup, then pour the wet mixture into the oat mixture. Fold in the pears.
Spray a square baking dish with oil or cooking spray. Pour oatmeal into the baking dish and bake for 25-35 minutes, or until set and beginning to brown. Serve immediately or, if freezing, allow the oatmeal to cool, then cut it into 6 to 8 pieces (the pieces hold together better after cooling!).
Notes
To reheat from frozen, heat the oatmeal in the microwave for 30 seconds at a time until heated through or bake in the oven at 350ºF for about 15 minutes.
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