Preheat oven to 400 degrees F.
Melt your butter in a pan on medium heat.
Once heated, add in your garlic, Thai chili peppers, and onion. Cook for about 2 minutes.
Then add in your spinach and cook until it is completely wilted. Add salt and black pepper per your taste while its cooking. Then remove from heat.
In a bowl, mix together your cream cheese, cooked spinach, mozzarella cheese, sharp cheddar cheese, crushed red pepper, salt and black pepper per taste.
Cut open the top of your bread loaf and remove all of the dough so you can form the bowl.
Stuff the cream cheese and spinach mixture into the bread bowl. Sprinkle with some extra cheese, if desired, and layer the jalapeno slices on top.
Bake in the oven for 18-20 minutes with the top off.
Serve to guests immediately with chips/veggies when its done!