01 -
3 tablespoons unsalted butter.
02 -
2 medium yellow onions, coarsely chopped.
03 -
6 garlic cloves, smashed and peeled.
04 -
1/2 teaspoon red pepper flakes.
05 -
1 1/4 teaspoon fine sea salt.
06 -
Black pepper to taste.
07 -
2 pounds broccoli with stalks.
08 -
1 large russet potato (12 oz), peeled and chunked.
09 -
6 cups water.
10 -
4-8 ounces sharp cheddar cheese, grated.
11 -
Chives or green onions for garnish (optional).