Heat a large pan over medium-high heat. Add the diced bacon and cook for 3-4 minutes, stirring occasionally, until the edges start to brown. Add the roughly diced onion and cook for 2 minutes, stirring constantly.
Sprinkle the flour over the mixture and stir well for about 1 minute. Add roughly 50 ml of water and stir to combine. Reduce heat to medium. Gradually add the remaining water (roughly 150 ml more, for a total of about 200 ml) while stirring constantly for 3-5 minutes until a sauce forms.
Add the sliced mushrooms and simmer over medium heat for 4-5 minutes until softened. Add the dumpling strips and pour the cream over them. Stir well for 1-2 minutes, scraping the bottom of the pan to incorporate the browned bits. Season with salt, pepper, chives, and parsley. Serve immediately.