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Connecticut Casserole


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5 from 3 reviews

  • Author: 365 Days of Slow and Pressure Cooking
  • Prep Time: 40 minutes
  • Cook Time: 20 minutes (plus 10 minute NPR)
  • Total Time: 1 hour
  • Yield: 4-6 servings 1x

Description

Tender chunks of beef with a savory mushroom gravy and mashed potatoes baked with cheese and panko on top. Use the Instant Pot to speed up the cooking process! 


Ingredients

Scale
  • 1 Tbsp olive oil
  • 1 pound beef stew meat
  • 1 tsp kosher salt
  • 1 tsp black pepper
  • 1 tsp garlic powder
  • 1 onion, diced
  • 8 ounces sliced mushrooms
  • 1 cup beef broth
  • 1 pound red potatoes
  • 1/4 tsp garlic salt
  • 1/4 cup milk
  • 2 Tbsp butter
  • 1/2 cup sour cream
  • 2 Tbsp cornstarch
  • 1/3 cup panko bread crumbs
  • 2/3 cup shredded cheddar cheese

Instructions

  1. Turn Instant Pot to saute setting. When display says HOT add in the olive oil and swirl it around. Add in the beef stew meat and let brown for about 3 minutes, turn over with tongs and brown on other side for 3 minutes. 
  2. Season the meat with kosher salt, pepper and garlic powder. Add in the onion and mushrooms and saute for about 4 minutes. 
  3. Pour in the broth and scrape bottom of pot so that nothing is sticking.
  4. Place whole potatoes in the pot. 
  5. Cover Instant Pot and secure the lid. Make sure valve is set to sealing. Set the manual/pressure cook button to 20 minutes. When time is up let pot sit for 10 minutes and then move valve to venting and remove the lid. 
  6. Use tongs to place potatoes into a medium bowl. Mash the potatoes. Stir the garlic salt, milk and butter into the mashed potatoes. Set aside. 
  7. In a small bowl stir the sour cream together with 1 cup of hot liquid from the pot. Stir the cornstarch into the mixture. Stir the mixture into the pot. Turn Instant Pot to saute setting and stir until sauce has thickened. 
  8. If you’d like you can serve as is…mashed potatoes with the mushroom and beef gravy. However if you’d like a more “casserole” type of dish then add the beef gravy to a 9×9 inch baking dish. Scoop the potatoes in dollops on top of the beef gravy. Use a rubber scraper to spread out. Sprinkle the potatoes with the cheese and panko. Bake in the oven at 350 degrees for 20 minutes. Serve and enjoy!
  • Category: Beef
  • Method: Instant Pot and Oven