French Onion Meatball Sub Sandwiches

5 from 2 votes

French Onion Meatball Sub Sandwiches

Easy French onion meatball sub sandwiches breath new life into a hohum bag of frozen meatballs and your lunch (or dinner!). Meatballs are lovingly cooked in a French onion soup bath, added to a crusty baguette, and topped with creamy Swiss cheese and caramelized onions before being baked to cheesy, delicious perfection.

Prep Time10

Cook Time30

Total Time40

Course: Dinner, Entree, Lunch, Main Course, Sandwich

Cuisine: American

Servings:

Calories: 383kcal

Author: Meaghan @ 4 Sons R Us

Ingredients

1 bag frozen meatballs thawed
1-2 10.5 oz cans condensed French onion soup
2 medium yellow onions thinly sliced
4 tbsp butter divided
12 slices thinly sliced Swiss cheese
6 6" crusty baguettes

US Customary - Metric

Instructions

Spread the meatballs out in a 9x13" baking dish. Pour the soup out over the meatballs. Stir a bit to evenly coat the meatballs.
1 bag frozen meatballs, 1-2 10.5 oz cans condensed French onion soup
Bake the meatballs at 350 degrees for 20-25 minutes.
In a medium sized skillet, over medium heat, melt 2 tablespoons of butter. Stir in the onions, and then cook, stirring often to prevent burning, until the onions are caramelized- about 7-10 minutes. Remove from heat, and set aside.
4 tbsp butter, 2 medium yellow onions
Slice the baguettes in half, if they aren't already, and spread the rest of the butter evenly out over the insides. Transfer them to a baking sheet, butter sides up.
6 6" crusty baguettes
When the meatballs are done, turn the oven to broil. Place the bread in the oven, watching closely, and cook just until the butters melted and they've begun turning golden brown.
Using a slotted spoon, add meatballs to the bottom of each baguette. Top each generously with the caramelized onions and cheese. Place them back under the broiler, just until the cheese is melted & bubbly.
12 slices thinly sliced Swiss cheese
Remove them from the oven. Top each sandwich with its top bun, and serve immediately.

Notes

You can use any variety of meatball you have on hand or prefer.
Make sure you are stirring the onions almost constantly when you are cooking them. Stirring prevents them from sticking and burning.
Keep a very close eye on everything when you are broiling it. The bread will go from golden perfection to burnt very quickly. The same with the assembled sandwiches.

Nutrition