How to Make the Perfect Cowboy Butter Spaghetti
American · Easy · 25 min · 4 servings
A bold and buttery pasta dish loaded with garlic, herbs, lemon, and a hint of heat inspired by classic cowboy butter sauce. It comes together in under 30 minutes for a weeknight dinner that packs serious flavor.
Why this recipe works
This Cowboy Butter Spaghetti recipe has been crafted to deliver restaurant-quality results in your home kitchen. At just 25 minutes from start to finish, it fits perfectly into a busy schedule without sacrificing flavor. Each serving comes in at 540 calories with 14g of protein, making it a balanced choice for any meal.
What you will need
This recipe uses 8 simple ingredients that you can find at any grocery store:
- 12 oz spaghetti
- 6 tbsp unsalted butter
- 5 cloves garlic minced
- 1 tsp red pepper flakes
- 2 tbsp fresh lemon juice
- 2 tbsp fresh parsley chopped
- 1 tsp Dijon mustard
- 0.5 cup reserved pasta water
Step by step instructions
Step 1: Cook the Pasta
Bring a large pot of salted water to a boil. Cook spaghetti according to package directions until al dente. Reserve half a cup of pasta water before draining.
Step 2: Make the Cowboy Butter
In a large skillet melt butter over medium heat. Add minced garlic and red pepper flakes and cook for 1 to 2 minutes until fragrant but do not let the garlic brown.
Step 3: Build the Sauce
Stir in Dijon mustard and lemon juice into the butter mixture. Add reserved pasta water a splash at a time to create a silky emulsified sauce.
Step 4: Toss the Pasta
Add drained spaghetti directly into the skillet. Toss vigorously with tongs to coat every strand evenly with the cowboy butter sauce.
Step 5: Garnish and Serve
Remove from heat and top with fresh chopped parsley. Serve immediately with extra lemon wedges and parmesan if desired.
Easy substitutions
Missing an ingredient? Here are some swaps that work perfectly:
- spaghetti → linguine or fettuccine
- fresh lemon juice → white wine for a deeper flavor
- red pepper flakes → cayenne pepper for more intense heat
Common mistakes to avoid
Watch out for these pitfalls that can affect your results:
- Draining all the pasta water leaves the sauce too thick and unable to coat the noodles properly
- Browning the garlic instead of gently softening it creates a bitter flavor in the final dish
- Skipping the Dijon mustard removes the emulsifying agent that keeps the butter sauce smooth
Nutrition facts
Per serving: 540 calories, 14g protein, 68g carbs, 24g fat, 3g fiber.
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