In a food processor, blend butter with garlic, shrimps and sage. Cover the halved shrimps with a thin layer of the butter shrimp mixture. Sprinkle with breadcrumbs, season with salt and pepper to taste. Place the shrimps onto a baking sheet and grill those 2-3 minutes until golden brown. Set aside and keep warm.
Cook Tortelloni according to package instructions. In the meantime, heat the butter shrimp mixture in a large skillet over medium high heat until fragrant about 2-3 minutes. Drain Tortelloni add to the skillet and toss to combine. Season with salt and pepper to taste.
Divide Tortelloni among plates. Garnish each portion with 2 half shrimps and serve immediately.