Pasta with Fennel and Onions

Step 1
Trim fennel bulbs; cut in half, lengthwise, and remove tough cores. Thinly slice fennel bulb halves lengthwise. Peel onions; slice in half lengthwise, and thinly slice onions lengthwise.

Step 2
Heat olive oil in a large skillet over medium heat; cook and stir fennel and onions until onions are translucent, about 8 minutes. Pour in white wine, turn heat up to medium-high, and cook, stirring often, until wine has nearly evaporated and fennel and onions begin to brown, 8 to 10 minutes.

Step 3
Bring a large pot of lightly salted water to a boil; cook linguine at a boil until tender yet firm to the bite, about 11 minutes; drain and keep warm. Reserve 1/4 cup of pasta water.

Step 4
Stir tomatoes into fennel mixture and cook until tomatoes soften, about 3 minutes. Mix lemon juice and pine nuts into vegetables.

Step 5
Stir linguine into fennel mixture and mix in reserved pasta water. Cook pasta and vegetables over high heat, stirring until hot and thoroughly combined, about 2 minutes. Serve in a large serving bowl topped with Parmesan cheese.