Slow-Cooker Tuna Noodle Casserole

Name: Slow-Cooker Tuna Noodle Casserole
Prep time: 25 min
Cook time: 4 h
Total time: 4 h 25 min
Cuisine: American
Ingredients: 1/4 cup butter, cubed; 1/2 pound sliced fresh mushrooms; 1 medium onion, chopped; 1 medium sweet pepper, chopped; 1 teaspoon salt, divided; 1 teaspoon pepper, divided; 2 garlic cloves, minced; 1/4 cup all-purpose flour; 2 cups reduced-sodium chicken broth; 2 cups half-and-half cream; 4 cups uncooked egg noodles (about 6 ounces); 3 cans (5 ounces each) light tuna in water, drained; 2 tablespoons lemon juice; 2 cups shredded Monterey Jack cheese; 2 cups frozen peas, thawed; 2 cups crushed potato chips