Cut the stems from the broccoli and peel the outer layer off. Chop into bite size pieces.
Cut the broccoli flowerettes into even sized pieces.
Place the broccoli, stems, onion, garlic cloves, and celery in the pot of your pressure cooker.
Pour in the chicken stock and add the lemon juice and nutmeg.
Place the lid on top and lock. Turn the steam release valve to the locked position and press the soup/stew button. Adjust the timer to 12 minutes.
After the timer has counted down to zero, carefully release the steam and remove the lid.
Take 3/4 of the broccoli, all of the onion, celery and garlic out and place it in a food processor or blender. Pulse until smooth.
Add the blended mixture back to the pot and stir in the half and half. Season to taste with salt and freshly ground black pepper. Heat through with the warming selection if needed.
Serve with croutons and freshly grated cheese of your choice.
For Fresh Croutons:
Place the bread cubes on a baking sheet and brush with the melted butter.
Place on the top rack of the oven and turn the broiler on high. Cook for 2-3 minutes or until desired brownness is achieved.