Step 1

For the pasta, bring a large pot of salted water to boil over high heat. Meanwhile, heat a large saute pan over medium heat. Add the olive oil, garlic, anchovies, and red pepper flakes. Stir cooking for 30 seconds -- you will smell the anchovies but it will not leave a strong taste.

Step 2

Add the tomatoes, sun-dried tomatoes, brown sugar, and vinegar; stir to combine. Simmer sauce until slightly reduced, about 15 minutes. While the sauce simmers, prepare olives and herbs; pour capers into a small dish -- it's easier to measure them that way.

Step 3

Meanwhile, add the fettuccini to the boiling water; stir to prevent them from sticking. Cook pasta until al dente (refer to package for times) Before draining, remove 1/4 cup cooking liquid to thin the sauce if needed.

Step 4

Finish the sauce with the olives, herbs, capers, green onions, and salt, plus some pasta water if the sauce seems too thick. Transfer the sauce to a large shallow bowl and top with the drained pasta. Toss until pasta is evenly coated with the sauce.

Step 5

Sprinkle the remaining green onions on the pasta or around the plates.