Taco Mac Brussels Sprouts Recipe: Cheesy Southwestern Skillet Dinner

This skillet dinner transforms weeknight meals with bold Southwestern flavors and a satisfying crunch. The combination of taco seasoning, pasta, and roasted brussels sprouts creates a one-pan wonder that’s both hearty and easy to prepare.

I developed this recipe to bring smoky, spiced notes to a comforting mac and cheese base. The brussels sprouts add texture and earthiness, balancing the rich, cheesy sauce. It’s a dish that feels indulgent but stays grounded in wholesome ingredients.

Every bite delivers tender pasta, crisp-tender vegetables, and a creamy, spiced sauce. The flavors meld together beautifully, making it a meal that’s as satisfying as it is simple to make.

Perfect for busy evenings when you want something flavorful without the fuss. Here’s how to bring this skillet dinner to your table.

Ingredients for Taco Mac Brussel Sprouts

Short list. Big Southwestern flavor. One skillet, zero fuss for this satisfying dinner.

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The cheeses make this dish. Sharp cheddar from a block melts better than pre-shredded (which has anti-caking stuff). Pepper Jack adds that spicy kick—Sargento or Tillamook are solid choices. The brussels sprouts? Look for firm, bright green heads at Whole Foods or your local market. Smaller sprouts are sweeter and more tender, so grab those if you can.

No Pepper Jack? Use Monterey Jack plus a pinch of cayenne. Fresh garlic and onion work if you don’t have powders—just sauté them first. The pasta can be whole wheat or gluten-free if needed (I like Barilla’s texture). Want extra smokiness? Add half a teaspoon of chipotle powder. The milk can be any kind, but whole gives the creamiest sauce.

Leftovers keep 3-4 days in the fridge (the sprouts soften a bit, but still tasty). Reheat with a splash of milk to loosen the sauce. Freezes okay for 1 month, though the texture changes slightly. Best eaten fresh, honestly.

Step-by-Step Instructions for Taco Mac Brussels Sprouts

Here’s how I nail this one-pan wonder every time with maximum flavor and minimal cleanup.

Step 1: Roast the Brussels Sprouts to Perfection

Preheat your oven to 425°F. Toss the 1 lb Brussels Sprouts with 1 tbsp Vegetable Oil, 1 tsp Salt, 0.5 tsp Black Pepper, 1 tsp Ground Cumin, 1 tbsp Chili Powder, 1 tsp Smoked Paprika, 1 tsp Garlic Powder, and 1 tsp Onion Powder on a rimmed baking sheet. Spread them in a single layer—crowding steams instead of roasts.

Roast for 20-25 minutes until the edges are deep golden brown and crispy, and a knife slides in easily. Flip halfway through for even browning. The spices should be fragrant and toasted, not burnt. This builds the Southwestern flavor base that makes this dish special.

Step 2: Cook the Elbow Macaroni Al Dente

While the Brussels sprouts roast, bring a pot of salted water to a boil. Add the 8 oz Elbow Macaroni and cook for 1 minute less than package directions. You want it slightly underdone because it’ll finish cooking in the cheese sauce later.

Drain the pasta, but don’t rinse it—the surface starch helps the sauce cling. Set aside and move quickly to the next step while the pasta is still hot. The residual heat will help melt the cheese smoothly when the time comes.

Step 3: Create the Creamy Cheese Sauce

In a large skillet over medium heat, melt the 3 tbsp Unsalted Butter. Whisk in the 3 tbsp All-Purpose Flour and cook for 1-2 minutes until the mixture turns light golden brown and smells nutty. This is your roux—the foundation for a velvety sauce.

Slowly pour in the 2 cups Whole Milk, whisking constantly to prevent lumps. Cook for 3-4 minutes until the mixture thickens enough to coat the back of a spoon. Reduce heat to low and stir in the 2 cups Sharp Cheddar Cheese and 1 cup Pepper Jack Cheese until fully melted and smooth. The sauce should be thick but still pourable.

Step 4: Combine and Finish

Add the cooked 8 oz Elbow Macaroni and roasted 1 lb Brussels Sprouts to the cheese sauce. Stir everything together gently but thoroughly, ensuring every piece is coated. The Brussels sprouts should maintain some crispness even after combining.

Cook for an additional 2-3 minutes on low heat to let the flavors meld. The pasta will absorb some of the sauce, creating that perfect creamy texture. Taste and adjust seasoning if needed, though the cheese and spices should provide plenty of flavor. Serve immediately while hot and gooey.

Troubleshooting Great taco mac brussel sprouts

Sauce Too Thin

If your cheese sauce isn’t thickening, cook your roux of 3 tbsp butter and 3 tbsp flour for a full 2 minutes before adding milk. This develops the starches fully. I also warm my 2 cups milk first—cold liquid slows the thickening process. 💡

Sauce Too Thick

When the sauce turns gluey, whisk in ¼ cup warm milk at a time until it loosens. Avoid high heat, which can cause the cheese to separate. The residual heat from the pasta will help balance the consistency when you combine everything.

Brussels Sprouts Mushy

For crisp-tender sprouts, roast your 1 lb Brussels sprouts at 425°F for exactly 20-25 minutes. Crowding the pan steams them, so spread them in a single layer. I flip mine halfway through for even browning.

Pasta Overcooked

Cook your 8 oz elbow macaroni for 1 minute less than package directions. It’ll finish in the hot sauce. Rinse only if absolutely necessary—the starch helps the sauce cling beautifully.

Cheese Not Melting

Pre-shredded cheese often contains anti-caking agents that prevent smooth melting. Always shred your 2 cups cheddar and 1 cup Pepper Jack from blocks. Low heat is key—high heat causes cheese to separate.

Seasoning Imbalance

If the dish tastes flat, remember the sprouts need more seasoning than pasta. Toss them with the full 1 tsp each of cumin, chili powder, smoked paprika, garlic powder, and onion powder before roasting. Taste the sauce before combining and adjust with ½ tsp salt if needed. 🌟

Frequently Asked Questions