Combine first 4 ingredients in a large zip-top plastic bag; add mushrooms to bag. Seal and marinate at room temperature for 2 hours, turning bag occasionally. Remove mushrooms from bag; discard marinade.
Prepare grill to medium heat.
Cut bell pepper in half lengthwise; discard seeds and membranes. Place pepper halves on grill rack coated with cooking spray; grill 15 minutes or until blackened, turning occasionally. Place in a zip-top plastic bag; seal. Let stand 10 minutes. Peel. Reserve 1 pepper half for another use. Finely chop 1 pepper half; place in a small bowl. Add mayonnaise, 1/2 teaspoon oil, and ground red pepper; stir well.
Place mushrooms, gill sides down, on grill rack coated with cooking spray; grill 4 minutes on each side. Place buns, cut sides down, on grill rack coated with cooking spray; grill 30 seconds on each side or until toasted. Spread 2 tablespoons mayonnaise mixture on top half of each bun. Place 1 mushroom on bottom half of each bun. Top each mushroom with 1 tomato slice and 1 lettuce leaf; cover with top halves of buns.
Bring a large pot of salted water to a boil over medium heat. Add the pasta cook it according to package directions.
While the pasta is cooking, in a small bowl, whisk together the balsamic vinaigrette, mayonnaise, and sugar.
Drain the pasta well, transfer to a large serving bowl, and let cool. Add the tomatoes, mushrooms, olives, green pepper, salt, to taste, and the black pepper. Pour the dressing over the salad and toss to combine. Sprinkle with the cheese, toss lightly, and serve.
Toss turnips and mushroom caps on a baking sheet with rosemary. Drizzle with olive oil and season withsalt and pepper. Turn the turnips cut-side down, then roast at 425 degrees F until golden and tender, 25 to 30 minutes.
Preheat oven to 450°F. Coat a rimmed baking sheet with cooking spray.
Place mushroom caps, gill-side up, on the prepared pan. Sprinkle with salt and 1/8 teaspoon pepper. Roast until tender, 20 to 25 minutes.
Meanwhile, mash ricotta, spinach, 1/4 cup Parmesan, olives, Italian seasoning and the remaining 1/8 teaspoon pepper in a medium bowl. Place marinara sauce in a small bowl, cover and microwave on High until hot, 30 seconds to 1 1/2 minutes.
When the mushrooms are tender, carefully pour out any liquid accumulated in the caps. Return the caps to the pan gill-side up. Spread 1 tablespoon marinara into each cap; cover the remaining sauce to keep warm. Mound a generous 1/3 cup ricotta filling into each cap and sprinkle with the remaining 1/4 cup Parmesan. Bake until hot, about 10 minutes. Serve with the remaining marinara sauce.
(Sweet asparagus and spring onions go so well with the woodsy flavor of morels. All you need is a bit of butter and some crème fraîche to finish the dish. Prep and Cook Time: 45 minutes. Notes: If you can find fresh morels, definitely splurge on them; the flavor is unparalleled. Be sure to clean both dried and fresh morels well before using, to avoid unpleasant sandy bites. We like to peel the tough outer skin from the asparagus for this dish. This not only makes it prettier but results in more tender stalks. If you like, blanch the vegetables the day before, then wrap them in moistened paper towels, put in a plastic storage bag, and refrigerate.)
1/3 poundfresh morel mushrooms or 1 oz. dried (see Notes)
3 bunches asparagus, ends trimmed and stalks peeled (see Notes)
3 bunches green onions, white and pale green parts only, root ends trimmed
4 tablespoonsunsalted butter
1/2 cupcrème fraîche**
1 teaspooncoarse kosher salt
1/2 teaspoonfreshly ground black pepper
1. Bring a large pot of water to a boil. If using dried morels, put them in a small bowl, cover with 1 cup boiling water, and let stand 10 minutes. Lift out and pat dry.
2. Meanwhile, generously salt remaining boiling water. Fill a large bowl with ice and cold water and set near the stove. Add asparagus to boiling water and cook until crisp-tender, about 4 minutes. Remove from water and immediately plunge into ice bath to stop cooking. Repeat process with green onions. Drain asparagus and onions on paper towels, then cut asparagus spears in half.
3. In a large frying pan over medium-low heat, melt butter. Add morels, asparagus, and onions and cook 1 minute, tossing gently to coat with butter. Stir in crème fraîche and season with salt and pepper. Continue cooking until heated through, 4 minutes longer. Transfer to a serving dish.