Tryout this quick Brunch friendly buttery Spring Asparagus Tart recipe. Use these simple easy steps to create a tasty and visually enticing dish. 1. Preheat oven to 400 degrees. Line a baking sheet with parchment paper. 2. Toss asparagus with olive oil. Season asparagus stalks and lay out on a creamy Mascarpone base in one direction. Lay out the other half in the opposite direction. Bake for 25 minutes at 400 degrees. 3. Serve tart with lightly dressed greens.