Preheat the oven at 350 degree Fahrenheit.
Coarsely grind the pine nuts in the grinder.
Mix all the ingredients of the stuffing in a bowl. (Except for the mozzarella cheese).
Slit the peppers length wise.
Fill the stuffing inside the peppers properly (The peppers should be packed with the stuffing).
Grease the cookie sheet or baking pan (I use parchment pepper to avoid extra consumption of oil).
Spray little cooking oil on the peppers to keep them moist.
Bake the peppers for 15 minutes (Make sure that the peppers are soft but crunchy).Take out the peppers and sprinkle the mozzarella cheese on them and put them back in the oven. Bake the peppers again for 5 minutes or until the cheese melts.
Turn off the oven and let them stay in the hot oven for 2 minutes so that the flavors mix in well and the peppers are settled with the cheese.
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