Rosemary Mustard Potatoes
Letâs resurrect the potato, shall we? These Rosemary Mustard Roasted Potatoes are crispy on the outside, fluffy on the inside, and bold enough to upstage your main dish. Youâve been warned.
Servings
6
Ready In:
1 hour, 10 minutes
Good For:
Lunch, Dinner, Supper
Inroduction
About this Recipe
đ„âš The humble potato is back and better than everâwith a crispy, golden glow-up. These Rosemary Mustard Roasted Potatoes are the ultimate side dish that might just upstage your main. Crispy edges, fluffy centers, a hint of mustard sass, and a sprinkle of rosemary charm.Â
While I was born in England, my fierce, wonderful, and very funny Irish mother insistedârepeatedly and with great theatrical emphasisâthat I was half Irish. The reality? Iâm not English at all. Born there, yes. But genetically? Not a crumpet in sight. My father was Welsh, my mum was from southern Ireland (Eire), which means I am precisely zero parts English and 100% confused. I only discovered this identity twist while going through the joyful labyrinth known as the green card process. I can technically call myself Britishâthanks, Dadâbut not English. Still confused? Join the club. But here’s one thing that never confuses me: the deep-rooted love the Irish (and pretty much all Brits) have for potatoes. They’re practically a food group.
Iâm not sure when I stopped eating them. One day, my brainâlikely influenced by social media and a kale smoothieâdecided that starch was the devilâs carbohydrate. Sure, I still flirted occasionally with a cheeky french fry (or “chip” as my inner child still calls them), but the glorious, versatile potato was benched for far too long.
Growing up in Manchester, âTea Timeâ (aka dinner) was an unshakable combo of meat and potatoes, with the occasional overcooked vegetable thrown in for good measureâsometimes so mushy they didnât require chewing. My lovely, mad Irish mother wasn’t exactly a culinary wizard, but what she could do was make a mean roast potato. Her secret? Meat fat. Possibly a heart attack in the making, but delicious nonetheless.
Ingredients
- 2 1/2 pounds red bliss potatoes
- 2 yellow onions
- 3 tablespoons good olive oil (the kind that doesnât scream âbudget bottleâ)
- 2 tablespoons whole-grain mustard
- 1 teaspoon fresh rosemary, finely chopped
- Kosher salt
- 1 teaspoon freshly ground black pepper
- 1 teaspoon fresh parsley (optional, but it makes you look fancy)
Step by Step Instructions
- Preheat the oven to 425°F.
- Cut the potatoes in halves or quarters, depending on their size and your patience.
- Bring a large pot of salted water to a boil and add the potatoes. Boil for 10 minutesâjust enough to soften them slightly without turning them into mash.
- While the potatoes are having their spa moment, peel and slice the onions into 1/4-inch-thick half-rounds.
- Drain the potatoes and return them to the pot. Add the onions.
- Toss everything together like you’re in a rustic cooking showâadd olive oil, mustard, rosemary, about 2 teaspoons of salt, and pepper. Get your stir on until everythingâs well-coated.
- Spread the mixture onto a baking sheet in a single, happy layer.
- Bake for 45 minutes to 1 hour, tossing occasionally with a metal spatula so everyone gets golden and crispy. (No potato left behind!)
- Serve hot, with a sprinkle of parsley and maybe a little extra salt, depending on your sass level.
Notes:
Surprisingly fabulous served cold in a saladâif you have any left over, which you wonât.


