Philly Cheesesteak Bowl - Classic Flavors Over Rice

Ingredients

• 1 lb lean ground beef
• 1 tablespoon butter
• 1/2 red onion, thinly sliced
• 1 green bell pepper, thinly sliced
• 1 red bell pepper, thinly sliced
• 4 cups cooked white rice
• Salt
• black pepper
• 2 tablespoons butter
• 3 tablespoons all-purpose flour
• 1-2 teaspoons garlic, minced
• 1 1/2 cups half-and-half
• 1 cup shredded white cheddar cheese
• 1/2 teaspoon ground mustard
• 1 teaspoon kosher salt
• 1/8 teaspoon black pepper