Vegetable Pot Pie

Ingredients

• 2 tablespoons butter
• 2 celery stalks, coarsely chopped
• 1 yellow onion, coarsely chopped
• 1 large carrot, peeled and cut into small chunks
• 1 small red bell pepper, seeded and coarsely chopped
• 3/4 teaspoon dried thyme, crumbled
• 3 tablespoons all-purpose flour
• 1 cup vegetable broth or bouillon
• 1 cup broccoli florets
• 1 cup cauliflower florets
• 1 cup frozen pearl onions
• 2 ounces cheddar cheese, cut into small cubes
• Lattice pastry top or plain pastry circle for one-crust 9-inch pie