Mac & Cheese with Peas or Broccoli | The Grounded Kitchen

One pot, twenty-five minutes. Mac and cheese made properly — a silky roux-based sauce, sharp cheddar, and just enough vegetable to make it a complete meal without making a point of it. Peas fold in at the end and disappear into the sauce. Broccoli adds texture and presence. Use whichever you have. This is the comfort meal that works for kids on a weeknight and adults who know better than to pretend they don't want it. Make it once from scratch and you won't go back to the box. Serves: 4 The Findings: Why It Works The roux is the foundation. Equal parts butter and flour, cooked briefly before the milk goes in, creates a stable base that won't break or go grainy. Don't rush it — the flour needs to cook out for at least a minute before the milk is added. Warm milk, not cold. Adding cold milk to a hot roux causes lumps. Warm the milk first — even 60 seconds in the microwave while the pasta boils — and the sauce comes together smoothly every time. Off-heat cheese addition. Remove the pan from the heat before adding the cheese — and let it sit for 30–60 seconds if the pot is still very hot. High heat causes the proteins in cheese to seize and the sauce turns grainy. Off heat, the residual warmth melts it smoothly. Grate your own cheese. Pre-shredded cheese contains anti-caking agents that prevent smooth melting. Freshly grated cheese melts cleanly into a silky sauce. Pasta water is liquid gold. The starchy water emulsifies the fat and starch in the sauce, keeping it glossy and fluid as it cools — without thinning the flavour the way plain water would. If the sauce looks too thick after adding the cheese, this is exactly what it's for. Ingredients Core 350g (12 oz) macaroni or short pasta 2 tbsp unsalted butter 2 tbsp all-purpose flour 2¼ cups (540ml) whole milk, warmed 2 cups (200g) sharp cheddar, freshly grated ½ cup (50g) Gruyère or extra cheddar, freshly grated Vegetables (choose one or both) 1 cup (150g) frozen peas 1 small head broccoli, cut into very small bite-sized florets (about 1–2 cm) Seasoning 1 tsp Dijon mustard ½ tsp smoked paprika ¼ tsp garlic powder Salt, black pepper, and a pinch of cayenne to taste Small squeeze of lemon juice (optional) To Serve (optional) Toasted breadcrumbs (panko, toasted in butter) Extra grated parmesan Hot sauce Method Step 1. Cook pasta in a large pot of well-salted boiling water according to package instructions. While it boils, warm the milk in the microwave for 60 seconds — it'll be ready when you need it. Reserve ½ cup pasta water before draining. Drain the pasta into a colander and set aside, but keep the pot. Step 2. If using broccoli: add the very small florets to the pasta water for the last 2 minutes of cooking, then drain together with the pasta. If using frozen peas: no pre-cooking needed — they go in at Step 5. Step 3. Return the same pot to medium heat. Melt butter, then add flour and whisk constantly for 1–2 minutes until the mixture smells slightly nutty and looks lightly foamy — this cooks out the raw flour taste. Gradually add the warmed milk in a steady stream, whisking continuously to prevent lumps. Cook, stirring, until the sauce thickens enough to coat the back of a spoon, about 3–4 minutes. Taste the sauce at this point — it should be well-seasoned on its own before the pasta goes in. Step 4. Remove from heat and let the sauce sit for 30–60 seconds if the pot is still very hot. Add Dijon mustard, smoked paprika, garlic powder, salt, pepper, and cayenne. Add the grated cheese in two additions, stirring until fully melted and smooth after each. The sauce should look slightly looser than you think — it will tighten as the pasta goes in. If it's already thick, add a splash of reserved pasta water now. Add a small squeeze of lemon juice if using. Step 5. Add the cooked pasta and broccoli (if using). Add frozen peas straight from the freezer if using — they'll thaw instantly in the hot sauce. Stir well to combine, adding more pasta water as needed until the sauce coats every piece of pasta and turns glossy. Taste and adjust seasoning. Step 6. Serve immediately, topped with toasted breadcrumbs, extra parmesan, or a dash of hot sauce if desired. Explorer's Tips Warm the milk while the pasta boils: 60 seconds in the microwave is all it takes — it keeps the momentum going and makes a visible difference to the smoothness of the sauce. Don't walk away from the roux: Whisk constantly for the full minute — it can catch and burn quickly on medium heat. Toasted breadcrumbs: Toss panko in a little melted butter in a dry pan over medium heat for 2–3 minutes until golden. Scatter over the top just before serving — they add crunch and make the dish feel more considered. Leftovers: The sauce tightens significantly as it cools. Reheat with a generous splash of milk over low heat, stirring until loose and glossy again. Dairy-free: Use plant-based butter, oat milk, and a dairy-free cheddar-style cheese. The sauce will be slightly less rich but still very good. Add protein: Stir in diced ham, crispy bacon, or tinned tuna at Step 5 for a more substantial meal. Did you try a different cheese combination or vegetable? Share your version here — we'd love to see how you made it your own.

Item added to your cart

Member Access Only

Country/region

Language

Member Access Only