01 -
First things first, get your oven preheating to 375°F (190°C). Then, peel and dice those potatoes into roughly 1/2-inch cubes. I aim for pretty uniform pieces so they cook evenly, but honestly, a little variation adds character, right? Pop them into a pot of cold, salted water, bring it to a boil, and cook for about 5-7 minutes until they're just tender-crisp. You don't want mushy potatoes yet! Drain them well; nobody likes a watery casserole.
02 -
Grab a large skillet or Dutch oven, and get it hot over medium-high heat. Toss in your ground beef and break it up with a spoon. Brown it until it's no longer pink, then drain off all that excess grease. This is a crucial step! If you skip it, your hamburger potato casserole will be greasy, and the sauce won't cling properly. Once drained, add your diced onion and cook until softened, about 5 minutes, then stir in the minced garlic for another minute until fragrant. Oh, that smell!
03 -
Now for the flavor magic! Stir the tomato paste into the beef mixture and let it cook for a minute or two, really letting it get a little darker. This deepens its flavor. Then, pour in the beef broth and Worcestershire sauce, scraping up any browned bits from the bottom of the pan – that's pure flavor, don't waste it! Stir in the dried thyme and paprika. Let it simmer gently for about 5 minutes, allowing the flavors to meld beautifully.
04 -
Reduce the heat to low. Stir in the cream of mushroom soup and milk until everything is smooth and creamy. This is where the sauce for your comforting meal really comes together, getting that velvety texture. Taste it and adjust seasonings if needed – maybe a little salt and pepper? Don't be shy here; you want it well-seasoned, trust your taste buds!
05 -
Gently fold in the partially cooked potatoes with the beef and sauce mixture. Be careful not to mash them too much; we want chunks, not a purée! Pour half of this glorious Cheesy Hamburger Potato Casserole mixture into a 9x13 inch baking dish that you've lightly greased. Sprinkle about half of your grated cheddar cheese evenly over the first layer. This cheese layer is key for that gooey center!
06 -
Top with the remaining beef and potato mixture, spreading it out evenly. Finish it off with the rest of that beautiful grated cheddar cheese. Pop it into your preheated oven and bake for 25-30 minutes, or until the casserole is bubbling around the edges and the cheese on top is melted, golden, and slightly crispy. Honestly, that golden crust is my favorite part! Let it rest for a few minutes before serving.