Prepare the Beef and Vegetables:
In a large skillet, cook the thinly sliced beef over medium-high heat until browned.
Add the sliced onion, bell peppers, mushrooms, and minced garlic to the skillet.
Cook until the vegetables are tender and the beef is fully cooked through.
Stir in Worcestershire sauce, salt, and pepper to taste.
Assemble the Casserole:
Grease the crockpot insert with cooking spray.
Layer half of the frozen diced potatoes in the bottom of the crockpot.
Top with half of the cooked beef and vegetable mixture, followed by half of the shredded provolone cheese.
Repeat the layers with the remaining potatoes, beef and vegetable mixture, and provolone cheese.
Sprinkle grated Parmesan cheese on top.
Cook the Casserole:
Cover and cook on low for 6-8 hours or on high for 3-4 hours, until the potatoes are tender and the cheese is melted and bubbly.
Serve:
Garnish with chopped fresh parsley before serving.
Prep Time:
20 minutes
Cooking Time:
6-8 hours on low or 3-4 hours on high
Total Time:
6 hours 20 minutes – 8 hours 20 minutes
Servings:
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