Preheat oven to 375 degrees
Slice the tops of the peppers off and hollow out, removing the seeds. Chop the tops.
Heat large skillet to medium high heat, add oil and once hot, add turkey. Cook for about 3 minutes.
Add onions, chopped pepper, mushrooms, garlic, herbs and spices. Cook for 5 minutes, stirring occasionally.
Add spinach and tomatoes and reduce heat to simmer. Cook for 5 minutes.
Spoon mixture in a bowl and mix with 1 cup cheese.
Stuff the peppers with the mixture.
Place the peppers in a baking dish or smaller oven safe skillet and add 1/4 inch water to the bottom of the pan.
Bake for 15 minutes.
Sprinkle remaining cheese on the tops and bake for another 15 minutes.
Garnish with fresh herbs.