This soup has a very interesting and possibly a WTF reaction to the ingredient. It's a bit of peanut butter added at the end of cooking. A friend of mine made this for me and I absolutely loved it. He told me his weird and delicious ingredient was peanut butter and I didn't believe him because you don't really get an overwhelming taste of it. I made his recipe and it's now my go to broccoli and cheddar soup. I promise you won't even know it's in there. It adds a bit mellow nuttiness that goes well with the white cheddar.
This is still a great and easy broccoli soup with the PB if you're not feeling it.
1. In a large soup pot over medium-low heat, melt the butter. Add the leeks and sauté until tender but not browned, 4 minutes. Add the garlic and cook until aromatic, 45 seconds. Add the broccoli and a generous pinch of salt and sauté until bright-green and aromatic, 4 minutes.
2. Add the broth, beans and mustard powder and bring to a boil over medium- high heat. Reduce the heat to low, cover and simmer until the broccoli is fall-apart tender, 20 minutes. Now stir in the peanut butter.
3. In batches, blend the soup in a blender with the lid slightly ajar, or use an immersion blender to blend the soup in the pot off the heat. The immersion blender is much easier.
4. Return the soup to the pot. Off of the heat, gradually whisk the cheese into the soup and stir until melted. Add the nutmeg and season to taste with salt and pepper. Serve immediately. Serves 4.
Make this with a grilled cheese sandwich.