One Pot Caramelized Onion Rigatoni

Name: One Pot Caramelized Onion Rigatoni
Prep time: 10 min
Cook time: 1 h 10 min
Total time: 1 h 20 min
Cuisine: American
Ingredients: 2 tablespoon Unsalted Butter; 2 Yellow Onion (large, thinly sliced); 1/2 teaspoon Kosher Salt (more to taste); 3 cloves Garlic (minced); 8 oz Mushrooms (I used Trader Joe's Mushroom Medley from the frozen section; can also use fresh white or cremini mushrooms ); 1/4 cup Dry White Wine (dry); 8 oz Rigatoni (uncooked); 3 cups Chicken Broth; 1/2 teaspoon Black Pepper; 1 teaspoon Italian Seasoning; 3 oz Garlic & Herbs Boursin Cheese (use flavor of your choice; I like garlic & herb or shallot & chive); Parmesan cheese (freshly grated to serve)

4 steps

Prep:10minCook:1h 10min

This recipe is extra flavorful from the caramelized onions and all cooks in one pot!

Updated at: Wed, 30 Sep 2026 00:08:47 GMT

Nutrition balance score

Unbalanced

Glycemic Index

Low

Glycemic Load

High

Nutrition per serving

Calories531.8 kcal (27%)

Total Fat19.3 g (28%)

Carbs70.4 g (27%)

Sugars9.7 g (11%)

Protein17.3 g (35%)

Sodium1243.6 mg (62%)

Fiber4.8 g (17%)

% Daily Values based on a 2,000 calorie diet

Ingredients

3 servings

2 tablespoonunsalted butter

2Yellow Onion

large, thinly sliced

½ teaspoonkosher salt

more to taste

3cloves garlic

minced

8 ozMushrooms

I used Mushroom Medley from the frozen section, can also use fresh white or cremini mushrooms

¼ cupDry White Wine

dry

8 ozRigatoni

uncooked

3 cupschicken broth

½ teaspoonblack pepper

1 teaspoonitalian seasoning

3 ozGarlic & Herbs Cheese

use flavor of your choice, I like garlic & herb or shallot & chive

Parmesan Cheese

freshly grated, to serve

Instructions

Step 1

Heat butter in a dutch oven or large pot over medium heat. Add onions and a large pinch of salt and cook over medium low heat stirring occasionally until caramelized. This can take around 45 minutes.

Step 2

Once the onions are caramelized, stir in minced garlic and mushrooms. Cook for a few minutes then pour in white wine. Scrape up the brown bits on the bottom of the pan.

Step 3

Add uncooked rigatoni and chicken broth. Stir to combine. Add salt, pepper, and Italian seasoning. Let it come to a boil then turn the heat down to medium. Cook stirring often for about 15 minutes or until pasta is cooked and most of the liquid is absorbed.

Step 4

Turn off heat. Add Boursin cheese and stir well to combine until completely melted and smooth. Serve immediately with freshly grated parmesan cheese.

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