In a large skillet, heat olive oil over medium-high. Brown and crumble ground turkey and season with pepper. Add bell pepper and onion blend and cook 2 minutes. Add garlic and cook 1 minute. Stir in diced tomatoes with green chilies, tomato sauce and Italian seasoning; remove from heat.
In a 3-quart casserole dish, layer one-third of the meat mixture, half the white beans and 1/3 cup shredded Monterey Jack cheese. Repeat layering. Top with remaining meat and cheese for the third layer. Bake at 350°F for 40 minutes.