Recipe Background
Country Diner Casserole is a hearty, comforting dish with layers of flavor.
Country Diner Casserole brings a cozy vibe straight to your kitchen. The aroma of sizzling onions, bell peppers, and celery sets the stage for this hearty dish, blending into a medley of comforting smells. As they soften in the skillet, their savory sweetness starts to develop, preparing a luscious base for the ground beef. This casserole is a bit of nostalgia, wrapped in comforting layers of flavors that meld beautifully together.
The mashed potatoes come next, smooth and creamy, enriched with just enough butter and garlic to highlight their comforting nature without overpowering. Spreading them over the beef mixture, they cradle the filling beneath a soft, pillowy blanket. For a textural delight, ensure they're mashed finely, with no secrets lurking beneath the surface. Let them brown in the oven until they're flecked with golden hints—adding a gentle crispness to each bite.
Sharing this dish is an act of love, as it wafts through your dining room with a welcoming aroma that invites warmth and chatter. Each serving plates up like a gift—layers of rustic flavors and childhood memories. There's something truly special about gathering loved ones around a table, and this casserole, with its humble ingredients and rich taste, becomes the centerpiece of those cherished moments.
Ingredients
- 1 1/2 pounds russet potatoes peeled and diced
- cold water to taste
- 1/2 cup half-and-half
- 5 tablespoons unsalted butter
- 1 1/2 teaspoons kosher salt divided
- 3 cloves garlic minced
- 1/4 cup chives freshly chopped
- 2 large egg yolks lightly beaten
- 2 tablespoons vegetable oil
- 1 medium onion diced
- 3/4 cup green peppers diced
- 1/2 cup celery diced
- 2 pounds lean ground beef
- 1 cup tomato sauce
- 2/3 cup breadcrumbs
- 1 1/2 tablespoons Worcestershire sauce
- 1 1/2 tablespoons tomato paste
- green onions optional, to taste, chopped, for garnish
Directions
- In a medium-sized pot with a lid, add the potatoes and enough of the cold water to just cover them.
- Cover the pot and place it over high heat on the stovetop.
- Bring the water to a boil and remove the lid.
- Reduce the heat to medium-low and allow the potatoes to simmer until fork-tender, about 15 minutes.
- Drain the potatoes and return them to the pot.
- Add the half-and-half, the butter, 1 teaspoon of the kosher salt, the minced garlic, and the chives to the potatoes and mash until smooth.
- Add the egg yolks to the mashed potatoes and stir until fully incorporated.
- Preheat the oven to 400 degrees F.
- In a large skillet over medium-high heat, add the vegetable oil and heat until it is shimmering.
- Add the onions, the bell peppers, and the celery to the hot oil and cook, while stirring, until completely soft, about 8 minutes.
- Add the ground beef to the vegetable mixture and cook, while stirring and crumbling the meat, until the beef is no longer pink, about 5-7 minutes.
- Add the remaining kosher salt, the tomato sauce, the breadcrumbs, the Worcestershire sauce, and the tomato paste to the beef mixture and stir to combine.
- In a 2 1/2-quart casserole dish, add the beef mixture and spread it out evenly.
- Add the mashed potatoes on top of the meat mixture and carefully spread them out evenly.
- Bake until the mashed potatoes are lightly browned, about 25 minutes.
- Serve garnished with the green onions.
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