cauliflower & broccoli gratin

How To Make cauliflower & broccoli gratin

• Step 1
  Preheat oven to 425 degrees F. Spray 13 x 9" glass or ceramic baking dish with cooking spray.
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  Step 2
  Cook cauliflower in a large pot of boiling water 3 minutes or until almost tender. With slotted spoon, place in large bowl of ice water to stop cooking. Add broccoli to boiling water; cook 2 minutes or until almost tender. Place in ice water. Drain cauliflower & broccoli well; pat dry. Place in baking dish.
• 
  Step 3
  Microwave milk in 4 C glass measuring cup 2 - 3 minutes or until steaming hot but not boiling. Melt 1/4 C butter in large saucepan over medium heat; whisk in flour until smooth. Cook 30 seconds, whisking constantly. Remove from heat; gradually whisk in hot milk.
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  Step 4
  Return saucepan to medium high heat; bring to boil, whisking constantly. Reduce heat to low; simmer 5 minutes or until thick, whisking occasionally. Remove from heat; whisk in mustard, salt, pepper & cayenne.
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  Step 5
  Microwave remaining 1 Tbsp butter in small microwave safe bowl until melted; stir in panko. Sprinkle cauliflower & broccoli with 1 C of the cheese; top with sauce. Sprinkle with remaining 1 C cheese; top with panko mixture. NOTE: Gratin can be made to this point 2 days ahead. Cover & refrigerate. Add 5 - 10 minutes to baking time.
• Step 6
  Bake, uncovered, 30 - 40 minute or until golden brown & bubbly.
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