Pasta with broccolini and kielbasa sausage

Ingredients

• 1 pound of gemelli
• 1-tablespoon olive oil
• 1-pound Kielbasa sausage
• 2 cloves garlic, finely chopped
• 1/8 teaspoon crushed red pepper
• 1 bunch broccolini
• 4 tablespoons butter, cut into pieces
• 1 cup grated Parmesan (4 ounces)
• Cherry tomatoes
• Kosher salt and black pepper