Frittata with Fennel-Spiced Pork and Asparagus

Preheat oven to 350°F. Heat a 10" ovenproof skillet over medium-high. Add fennel seeds and toast, stirring constantly, until fragrant, 1 minute. Add pork, 1 tsp. oil, 1/2 tsp. salt, and 1/4 tsp. pepper and cook, breaking up pieces with a wooden spoon or spatula, until browned and cooked through, about 5 minutes more. Scrape pork mixture into a medium bowl.

Heat 1 Tbsp. oil in same skillet over medium. Add onion, 1/4 tsp. salt, and 1/4 tsp. pepper and cook, stirring occasionally, until softened and translucent, about 5 minutes. Add garlic and cook, stirring constantly, until fragrant, 1 minute. Add asparagus and cook, stirring occasionally, until crisp-tender and bright green, 3–5 minutes more. Add vegetable mixture to pork mixture, stir to combine, and let cool slightly. Wipe out skillet and reserve.

Meanwhile, whisk eggs, Parmesan, cream, 3/4 tsp. salt, and 1/4 tsp. pepper in a large bowl. Add pork and vegetable mixture and stir until well combined.