Smoky Cauli-power Mac & Cheese | Canadian Goodness

Ingredients

• 1 large or 2 small heads of cauliflower
• 1 lb (500 g) cremini mushrooms
• Salt and pepper to taste
• 4 tbsp (60 mL) canola oil divided
• 2 cups (500 mL) shredded Cow's Creamery extra-old Cheddar or other Canadian aged Cheddar divided
• 1 lb (500 g) elbow macaroni
• 1 cup (250 mL) panko breadcrumbs
• 1 onion diced
• 1/2 cup (125 mL) unsalted butter
• 3 cloves garlic minced
• 2 tbsp (30 mL) cornstarch
• 1 tbsp (15 mL) Dijon mustard
• 1 tsp (5 mL) Marmite (yeast extract)
• 1/2 tsp (2 mL) ground nutmeg
• 2 cups (500 mL) whole milk
• 1 cup (250 mL) 35% whipping cream
• 2 1/2 cups (625 mL) shredded Cow's CreameryAppletree Smoked Cheddar or other smoked Canadian Cheddar
• 1 cup (250 mL) crumbled Urban Blue cheese or other mild creamy Canadian Blue cheese
• Chopped Chives