1Add onions to a pan with butter and a pinch of salt, cook over medium heat for 30-40 minutes until caramelized.
2Add onions to a pan with butter and a pinch of salt, cook over medium heat for 30-40 minutes until caramelized.
3Add onions to a pan with butter and a pinch of salt, cook over medium heat for 30-40 minutes until caramelized.
4Add stock and thyme; cook on medium-high heat for 10 minutes until most of the stock is absorbed.
5Add stock and thyme; cook on medium-high heat for 10 minutes until most of the stock is absorbed.
6Add stock and thyme; cook on medium-high heat for 10 minutes until most of the stock is absorbed.
7Slice baguette into discs. In a bowl, combine baguette slices with olive oil, thyme, and salt; mix until evenly coated. Bake for 5-10 minutes until golden and crisp. Blitz into coarse breadcrumbs in a blender.
8Slice baguette into discs. In a bowl, combine baguette slices with olive oil, thyme, and salt; mix until evenly coated. Bake for 5-10 minutes until golden and crisp. Blitz into coarse breadcrumbs in a blender.
9Slice baguette into discs. In a bowl, combine baguette slices with olive oil, thyme, and salt; mix until evenly coated. Bake for 5-10 minutes until golden and crisp. Blitz into coarse breadcrumbs in a blender.
10Melt butter in a pan over medium heat, then mix in flour until combined. Cook for a few minutes, then gradually whisk in the milk, ensuring no lumps form. Once the milk is mixed in, bubble the sauce for a few minutes, constantly stirring.
11Melt butter in a pan over medium heat, then mix in flour until combined. Cook for a few minutes, then gradually whisk in the milk, ensuring no lumps form. Once the milk is mixed in, bubble the sauce for a few minutes, constantly stirring.
12Melt butter in a pan over medium heat, then mix in flour until combined. Cook for a few minutes, then gradually whisk in the milk, ensuring no lumps form. Once the milk is mixed in, bubble the sauce for a few minutes, constantly stirring.
13Remove the béchamel from the heat. Add 2/3 of the caramelized onions, cheeses, mustard, nutmeg, salt, and pepper to taste. Set aside.
14Remove the béchamel from the heat. Add 2/3 of the caramelized onions, cheeses, mustard, nutmeg, salt, and pepper to taste. Set aside.
15Remove the béchamel from the heat. Add 2/3 of the caramelized onions, cheeses, mustard, nutmeg, salt, and pepper to taste. Set aside.
16Boil a large pot of salted water, add pasta, and cook for 8-10 minutes until al dente.
17Boil a large pot of salted water, add pasta, and cook for 8-10 minutes until al dente.
18Boil a large pot of salted water, add pasta, and cook for 8-10 minutes until al dente.
19Place cooked pasta in a large pan, pour over the sauce and mix. Add pasta water if the sauce is too thick. Smooth it out, top with breadcrumbs and remaining caramelized onions. Broil for 5 minutes to toast breadcrumbs and serve.
20Place cooked pasta in a large pan, pour over the sauce and mix. Add pasta water if the sauce is too thick. Smooth it out, top with breadcrumbs and remaining caramelized onions. Broil for 5 minutes to toast breadcrumbs and serve.
21Place cooked pasta in a large pan, pour over the sauce and mix. Add pasta water if the sauce is too thick. Smooth it out, top with breadcrumbs and remaining caramelized onions. Broil for 5 minutes to toast breadcrumbs and serve.
Ingredients
3 white onions, julienned
3 white onions, julienned
3 white onions, julienned
65 g unsalted butter
65 g unsalted butter
65 g unsalted butter
1 pinch salt
1 pinch salt
1 pinch salt
1 tbsp thyme, needles finely chopped
1 tbsp thyme, needles finely chopped
1 tbsp thyme, needles finely chopped
300 ml beef stock
300 ml beef stock
300 ml beef stock
1 small baguette
1 small baguette
1 small baguette
3 tbsp olive oil
3 tbsp olive oil
3 tbsp olive oil
110 g unsalted butter
110 g unsalted butter
110 g unsalted butter
110 g all purpose flour
110 g all purpose flour
110 g all purpose flour
1.1 l whole milk
1.1 l whole milk
1.1 l whole milk
100 g gruyere cheese
100 g gruyere cheese
100 g gruyere cheese
100 g mozzarella cheese, grated
100 g mozzarella cheese, grated
100 g mozzarella cheese, grated
1 tsp dijon mustard
1 tsp dijon mustard
1 tsp dijon mustard
5 gratings nutmeg
5 gratings nutmeg
5 gratings nutmeg
0 salt & pepper
0 salt & pepper
0 salt & pepper
500 g spirali (cavatappi) pasta
500 g spirali (cavatappi) pasta
500 g spirali (cavatappi) pasta
Equipment
knifecutting boardwok or frying panblenderbaking traysaucepanwhiskgrater