
Sloppy Joe Casserole is a classic comfort food dish that's perfect for a weeknight dinner or a potluck gathering. It's a creative twist on the traditional sloppy joe recipe, layered with pasta, ground beef, and cheese.
The key to a great Sloppy Joe Casserole is using the right type of pasta, such as penne or rotini, which can hold onto the flavorful sauce.
This casserole is a crowd-pleaser, and you can easily customize it to suit your family's tastes.
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Recipe
To make a sloppy joe casserole, you'll need to start by chopping up a large yellow onion, two small red bell peppers, and six large garlic cloves. This will give you about 2 cups of onion and 2 cups of bell peppers.
Heat 2 tablespoons of olive oil in a Dutch oven or large pot over medium-high heat until shimmering, then add the onion and bell peppers, and season with 1/4 teaspoon of kosher salt. Cook, stirring occasionally, until the onion is translucent and the peppers are just tender, about 7 minutes.
Add 2 tablespoons of the garlic and cook, stirring often, until fragrant and light golden brown, about 2 minutes. Scrape this mixture into a 9x13-inch baking dish.
To make the sloppy joe mixture, cook 2 1/2 pounds of lean ground beef in the same pot over high heat, breaking it up into smaller pieces with a wooden spoon, until it's cooked through, 5 to 8 minutes.
Here's a list of the ingredients you'll need for the sloppy joe mixture:
- 2 1/2 pounds lean ground beef
- 2 (15-ounce) cans tomato sauce
- 3/4 cup ketchup
- 2 tablespoons apple cider vinegar
- 2 tablespoons packed light brown sugar
- 2 teaspoons prepared yellow mustard
- 2 teaspoons Worcestershire sauce
- 1 1/2 teaspoons kosher salt
Add the tomato sauce mixture to the pot and stir to combine. Reduce the heat to medium-high and bring to a simmer, stirring frequently, then reduce the heat to medium and simmer until the sauce is slightly thickened, about 5 minutes.
Ingredients and Preparation
To make a delicious sloppy joe casserole, you'll need the right ingredients. The heart of the dish is the protein component, which can be ground beef or turkey. Go for lean ground beef (85/15 or leaner) to avoid excess grease while still getting great flavor.

A traditional sloppy joe sauce is made with a mix of ketchup or tomato sauce and a few spices. You can also use store-bought sloppy joe mix for convenience, but watch the salt content. For a rich tomato base, use crushed tomatoes or a combination of ketchup and tomato sauce.
Sautéed onions, garlic, and bell peppers add depth and sweetness to the casserole. You can use sweet onions like Vidalia or yellow onions for this purpose. Green bell peppers also add crunch and a bit of veggie goodness.
A gooey cheese topping is a must-have for any sloppy joe casserole. Use melted cheddar, mozzarella, or pepper jack, or a combination of cheeses for the best results. Don't forget to brush the dinner rolls with unsalted butter for a rich finish and even browning.
Here's a list of the essential ingredients you'll need:
- Lean ground beef (85/15 or leaner)
- Crushed tomatoes or ketchup and tomato sauce
- Sweet onions (Vidalia or yellow)
- Green bell peppers
- Melted cheese (cheddar, mozzarella, or pepper jack)
- Unsalted butter
By following these simple guidelines, you'll be on your way to creating a mouth-watering sloppy joe casserole that's sure to please even the pickiest eaters.
Cooking and Storage

You can store sloppy joe casserole in the refrigerator for up to four days. The leftovers will keep in a covered container for 3-4 days in the fridge.
Refrigeration is a great option, but if you don't plan to use the casserole within that timeframe, consider freezing it. Frozen leftovers can be stored for up to three months.
Note that the tater tots will soften up over time, so you may want to reheat in the oven to restore some of their crispiness.
To freeze, simply place the leftover casserole in an airtight container or freezer bag and label it with the date. When you're ready to reheat, thaw it overnight in the fridge.
If you're short on time, you can also reheat the casserole in the microwave, but be aware that the tater tots might not regain their crunch.
Here's a quick reference guide to cooking and storing sloppy joe casserole:
- Refrigerate for up to 4 days or freeze for up to 3 months.
- Thaw frozen casserole overnight in the fridge before reheating.
- Reheat in a preheated 350°F oven or microwave single servings as needed.
Tips and Variations

If you're feeling adventurous, you could try adding some frozen peas to the casserole. Just stir them in at step 4. This will add a burst of freshness to the dish.
Some people might want to omit the crushed red pepper flakes if they're feeding younger kids. This will keep the dish mild and kid-friendly.
To change up the topping, consider swapping the Hawaiian buns with hamburger buns, brioche buns, crescent rolls, or biscuits. This will give the casserole a different texture and flavor.
If you want to add more veggies, you can try adding in more bell peppers, grated carrots, mushrooms, corn, or your preferred veggies. This will make the casserole more nutritious and flavorful.
You can also try substituting the ground chuck with ground turkey or chicken. This will give the casserole a leaner protein option.
Here are some common mistakes to avoid when making a sloppy joe casserole:
Nutrition
The nutrition facts for Sloppy Joe Casserole are quite impressive, with a serving size that's generous enough to satisfy a hungry crowd. Each serving contains 711 calories, which is a significant amount, but also indicates that this dish is filling and can be a satisfying meal.
The fat content is relatively high, with 33g per serving, which is equivalent to 43% of the daily value. This is mostly due to the presence of saturated fat, which accounts for 14g of the total fat content, or 68% of the daily value.
The cholesterol content is also notable, with 127mg per serving, which is 42% of the daily value. On the other hand, the sodium content is quite high, with 1768mg per serving, which is 77% of the daily value.
In terms of carbohydrates, the casserole contains 59g per serving, which is 22% of the daily value. This is partly due to the presence of dietary fiber, which accounts for 7g of the total carbohydrate content, or 24% of the daily value.
Here's a breakdown of the key nutrients in Sloppy Joe Casserole per serving:
Serving and Leftovers
You can store leftover sloppy joe casserole in the fridge for up to 4 days or freeze it for up to 3 months.
Leftovers will keep their best texture if reheated in the oven, especially if you're using tater tots - they'll soften up over time, so oven reheating can help restore some crispiness.
To freeze, thaw the casserole overnight in the fridge before reheating.
Storing and Reheating Leftovers
Storing and reheating leftovers is a breeze. Leftovers of sloppy joe casserole will keep in a covered container for 3-4 days in the fridge.
You can store leftovers in an airtight container in the refrigerator for up to four days, or freeze them for up to three months.
Freezing leftovers is a great option, as they can be thawed overnight in the fridge before reheating. Leftovers can be frozen for up to three months.
To reheat, cover the leftovers in a preheated 350°F oven until hot throughout, or microwave single servings as needed. Note that the tater tots will soften up over time, so you may want to reheat in the oven to restore some of their crispiness.
Here's a quick guide to storing and reheating leftovers:
It's worth noting that reheating in the oven can help restore the crispiness of tater tots, and using an air fryer is also a great option if you've got one.
What to Serve

When serving a casserole, I like to add some extra flavor and texture with a few simple options. You can't go wrong with some chopped scallions and/or a little hot sauce or even some ketchup.
A fresh side salad is a great way to round out the meal. Try pairing your casserole with a big green salad and a creamy dressing like my Creamy Balsamic Dressing or popular Homemade Ranch Dressing.
If you want to add some extra heartiness to your meal, consider serving your casserole with some steamed or roasted veggies, or sautéed greens. This will not only add some extra nutrients but also help balance out the richness of the casserole.
For a comforting touch, pair your casserole with some corn on the cob or crispy roasted potatoes.
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