Mac & Cheese Stuffed Zucchini - Master recipes

Ingredients

• 4 large zucchini, halved lengthwise -
• 3 tbsp. butter, melted, divided -
• Kosher salt -
• Freshly ground black pepper -
• 1 small yellow onion, finely chopped -
• 4 cloves garlic, minced -
• 3/4 tsp. smoked paprika -
• 1/2 tsp. ground mustard -
• 1/4 tsp. cayenne -
• 1/4 tsp. freshly ground nutmeg -
• 6 oz. elbow macaroni -
• 2 1/4 c. whole milk -
• 1/4 c. heavy cream -
• 2 c. shredded sharp yellow cheddar -
• 1 c. pepper jack -
• Hot sauce, for serving (optional)  -