Pasta with Charred Broccoli, Feta, and Lemon

INGREDIENTS

4 cups

small broccoli florets

3 tbsp

olive oil, divided

2 1/4 tsp

kosher salt, divided

1/2 tsp

crushed red pepper

8 oz

uncooked strozzapreti or mezze penne pasta

garlic cloves, thinly sliced

1 1/2 tbsp

all-purpose flour

1/2 cup

whole milk

3 oz

feta cheese, crumbled (about 3/4 cup)

1 tbsp

grated lemon rind

1/4 tsp

freshly ground black pepper

1/4 tsp

flaked sea salt (such as Maldon)