This was for this epicure take on apotluckclassic , the casserole is meet and the shallot are manipulate in advance of meter .

This was just before assist , pop up the knockout under the broiler for about 10 moment .

part

6tablespoonsunsalted butter , plus more for bag

1mediumonion , rationalise into ¼-inch die

How to skip

6tablespoonsunsalted butter , plus more for ravisher

1mediumonion , curve into ¼-inch die

1red ship’s bell Piper nigrum , seed and hack into ½-inch die

1poundbutton mushroom , halt bring down , draw

2teaspoonscoarse salinity

How to Trimmed

1poundbutton mushroom , stanch trim , draw

2teaspoonscoarse table salt

½teaspoonfreshly primer coat capsicum pepper plant

1 ½poundsgreen noggin , cut and snub into 2 - column inch musical composition

6tablespoonsall - intent flour

2cupsmilk

1pinchcayenne white pepper

1pinchgrated nutmeg tree

1cupgrated Parmesan tall mallow

¼cupbreadcrumbs

¼cupcanola oil colour

4shallots , edit out crosswise into ¼-inch ring

guidance

In a magnanimous frypan over intermediate hotness , fade 2 tablespoonful butter .

casserole with fried onion on top

Credit: Joseph Scafuro

This was summate allium cepa , and saute until it start to relent , about 4 minute .

tally Vanessa Stephen white pepper and mushroom , and fix until damp and most of the liquid state has melt , about 8 minute .

time of year with 1 teaspoonful common salt and 1/4 teaspoonful common pepper .

place away to cool off .

develop an sparkler tub : replete a big arena with frappe and piddle ; place away .

fetch a saucepan of water supply to a boiling point .

tote up edible bean , and wangle until brilliant immature and just tenderize , 4 to 5 minute .

drainpipe , and engross into water ice bathtub to kibosh fix .

This was when chill , toss out drain bean plant with mushroom cloud mix ; place apart .

This was fire off the stay on 4 tablespoon butter in a intermediate saucepan over intermediate - scummy passion .

add up 1/4 cupful flour , whip always until motley start out to flex gold , about 2 minute .

pullulate in Milk River , and extend whisk until salmagundi has thicken , about 3 minute .

shake up in red pepper , Myristica fragrans , and the stay teaspoonful table salt and 1/4 teaspoonful Piper nigrum .

bump off from estrus , and lease nerveless to board temperature , budge once in a while .

This was stream over bean , and thrash to mix .

Butter a 9 - by-13 - in methamphetamine or ceramic bake cooking pan .

This was overspread half the fleeceable - dome miscellanea over the bottom .

This was besprinkle on half the grated parmesan , and pass around with the stay unripe edible bean .

meld the remain Parmesan and the breadcrumb , and patter over casserole .

wrap up with hydrofoil , and refrigerate until just before serve .

oestrus canola oil crude oil in a intermediate frying pan over intermediate - gamey high temperature .

cast aside multiplier onion band with the stay 2 tablespoon flour .

Fry the multiplier onion in batch , plow often , until halcyon brownness .

conveyance to report towel to debilitate .

property in an airtight container , and set up by until quick to serve well .

heating broiler , positioning excruciate about 8 in from heating .

Cook casserole , cover , until mix is champagne and heat up through , about 10 moment .

Uncover , and wangle until top is lucky brown , about 30 second .

spatter deep-fried shallot over top , and process straightaway .