Bring a large pot of salted water to a boil and cook tortellini according to package directions until al dente.
Heat olive oil in a large skillet over medium-high heat. Add the sliced ribeye, season with salt and pepper, and sear until browned. Remove steak from skillet and set aside.
In the same skillet, melt butter and add onions and bell peppers. Saute until vegetables are softened and slightly caramelized.
Add minced garlic to the vegetables and cook for 1 minute until fragrant.
Deglaze the skillet with beef broth, scraping up any browned bits from the bottom.
Reduce heat to medium and stir in heavy cream. Bring to a gentle simmer.
Gradually stir in the shredded provolone cheese until melted and the sauce is smooth.
Return the cooked steak and tortellini to the skillet, tossing to coat thoroughly in the sauce.
Season with additional salt and pepper if needed and serve immediately.