Combine broth and water in a 4 cup glass
measuring cup and microwave on high until
very hot, about 5 minutes.
Spray 3-1/2 quart slow cooker with cooking
spray. Combine rice, onion, and pepper in
slow cooker and mix to combine. Pour hot
broth mixture over and cover crockpot. Cook
on high for 1-1/2 to 2 hours, until rice is
tender. Stir and serve.