I’m very late to this thread, but I am a roast dinner fanatic, and therefore feel the need to contribute: my Sunday roasts are, though I say it myself, sensational.
In keeping with the OP: I always do roast potatoes with whipped mashed potatoes. None of that new potato garbage.
My roasts invariably comprise:
The meat (often chicken but maybe a lump of slow-cooked beef)
Roast carrots
Roast parsnips
Steamed broccoli
Roast potato
Mashed potato
Yorkshire pud
Gravy
Bread sauce (if I’m feeling really gregarious)
My tips for prepping the above:
Oven at 175C (350F) the whole time.
Parboil the roasties for 10 mins, drain, agitate in the pan, douse with olive oil, dump into a roasting dish onto hot oil, then turn until each roastie has one flat side down. Shake herbes de Provence over the top. Slam in the oven for 30 minutes, then scrape them up with a palette knife and turn, and replace for 15 minutes.
Mash the shit out of the other potatoes before adding anything else. When they feel smooth, melt a huge knob of butter into them, whip with a hand whisk, season with salt and pepper then add 1-2 tablespoons of sour cream, and whip again. You can do this earlier as they reheat very well in the microwave.
Julienne the carrots and parsnips but make sure they are cut to a spear end, as this allows more caramelization of the sugars within, drop into a plastic food bag, pour in a couple glugs of oil and herbes de provence, and toss in the oil. Leave them to steep for a while. They only take 1/2 an hour to do, provided they’re spread out well enough on a roasting pan.
To make the bread sauce, stud a peeled onion with cloves, then simmer in enough milk to cover the onion in a small pan, for 2 hours or so. Strain it, add enough breadcrumbs to absorb all the liquid (less than you think initially because they take time to absorb it), then melt in a knob of butter and season with salt and pepper.
Let the meat rest for at least 30 minutes.
Finally, to make the gravy, I make a liquor first using a tablespoon or so of fruit jelly dissolved in a full glass of white wine, seasoned with pepper and a stock cube. I then add the meat juice stock to this (after I’ve de-fatted it), simmer and reduce for a while as the meat rests, then take off the heat and thicken with a bit of liquified corn starch.
Damn, my roasts are SO good. And I am arrogant, but you haveta taste one… 