Cheesy Baked Penne With Cauliflower And Crème Fraîche

• 1 1 1/2- to 1 3/4-pound head of cauliflower, cored, cut into 1-inch florets
• 2 large heirloom tomatoes
• 5 tablespoons butter, divided
• 1/2 cup thinly sliced green onions
• Coarse kosher salt
• 2 tablespoons all purpose flour
• 1 cup heavy whipping cream
• 3 cups coarsely grated Comte cheese (or half Gruyere and half Fontina; about 9 ounces), divided
• 3/4 cup Parmigiano-Reggiano,
• Parmesan cheese, divided
• 1 cup creme fraiche*
• 1 tablespoon whole grain Dijon mustard
• 10 ounces penne (3 1/2 cups)
• 1 cup fresh breadcrumbs (from crustless French bread ground in processor)

1. Cook cauliflower in large pot of boiling salted water until crisp-tender, about 5 minutes. Using large sieve, transfer cauliflower to bowl. Add tomatoes to pot; cook 1 minute. Remove from water; peel and dice tomatoes. Reserve pot of water.
2. Melt 2 tablespoons butter in large skillet over medium-high heat. Add cauliflower; saute until beginning to brown, about 5 minutes. Add tomatoes and green onions. Cook 1 minute to blend flavors. Remove from heat. Season with coarse salt and pepper.
3. Melt 2 tablespoons butter in large saucepan over medium-low heat. Add flour and stir 2 minutes. Gradually whisk in cream. Cook until sauce thickens, whisking occasionally, about 4 minutes. Add 2 cups Comte cheese; whisk until melted and sauce is smooth. Whisk in 1/2 cup Parmesan, then creme fraiche and mustard. Season with salt and pepper. Remove from heat.
4. Return reserved pot of water to boil. Add pasta and cook until tender but still firm to bite, stirring occasionally. Drain; return pasta to same pot. Stir in cauliflower mixture and sauce.
5. Butter 13x9x2-inch glass baking dish. Spoon in half of pasta mixture; sprinkle with 1/2 cup Comte cheese. Top with remaining pasta mixture and 1/2 cup Comte cheese. Melt remaining 1 tablespoon butter in small skillet. Add breadcrumbs and toss to coat. Remove from heat; mix in 1/4 cup Parmesan. Sprinkle crumbs over pasta. DO AHEAD:
6. Preheat oven to 350u0b0F. Bake pasta uncovered until heated through and bubbling, about 35 minutes.
7. *

cauliflower, tomatoes, butter, green onions, kosher salt, flour, heavy whipping cream, comtue cheese, parmesan cheese, crueme fraueeche, whole grain dijon mustard, penne, fresh breadcrumbs

Taken from www.epicurious.com/recipes/food/views/cheesy-baked-penne-with-cauliflower-and-creme-fraiche-350111 (may not work)