1. In a large (12-inch) nonstick or well-seasoned cast-iron skillet, heat olive oil over medium-high. Break up any stuck-together gnocchi and add to the skillet in an even layer. Cover and cook, undisturbed, until the gnocchi are golden brown underneath and unstuck from skillet, 2 to 4 minutes. Cook, stirring, until crisp on both sides, 2 to 3 minutes. If the gnocchi are burning instead of browning or the skillet looks dry, add more oil. Transfer to a bowl or plate.
2. Add the sausage to the skillet and break into small pieces. Cook, undisturbed, until sausage is browned, 2 to 4 minutes. Stir and cook until the sausage is cooked through, another 2 to 4 minutes.
3. Stir in the peas, mustard and ½ cup water and scrape up the browned bits on the skillet. (It may not look like a lot of liquid, but the peas will release some as they cook.) Simmer until the peas are cooked through, 2 to 4 minutes.
4. Add the browned gnocchi and the Parmesan; stir until the cheese has melted. Season to taste with salt and pepper, then stir in the herbs. Serve topped with more herbs, Parmesan and black pepper as desired.
This looks delicious.. def trying :)