Pure comfort food, this dish is made with lentils and mushrooms simmered in a rich, savory gravy. Serve them over mashed potatoes with quick and easy buttered peas on the side.
Place potatoes into a saucepan and cover with cold water and some salt. Cover and bring to a boil. Simmer uncovered for 12 to 15 minutes until potatoes can be easily pierced by a knife. Drain and let sit in a colander for ~5 minutes to let the steam escape (this creates creamier potatoes vs. liquidy potatoes).
Use a masher to mash steamed potatoes with sour cream, butter (portion for potatoes), and some salt. Set aside, covered to keep warm.
Heat a saute pan or skillet over medium-high heat. Add oil and then onions and mushrooms. Saute until soft, 3 to 4 minutes.
Add flour and spice mix and stir until no dry spots of flour remain, ~2 minutes.
Pour gravy mixture over onions / mushrooms while whisking. Bring to a simmer. Reduce heat to low-medium and add lentils. Simmer until sauce thickens slightly, 3 to 4 minutes.
Place frozen peas in a microwave safe bowl and cover with a damp paper towel. Defrost until no longer frozen and then cook on high until heated through, ~1 minute. Remove and toss with butter (portion for peas) and some salt and pepper.
Serve lentils, mushrooms, and sauce over mashed potatoes. Serve peas on the side. Enjoy!