Heat water in large nonstick skillet over medium-high heat until hot. Add bell pepper and onion; cook and stir until water has evaporated and vegetables are crisp-tender, 3 to 4 minutes. Add ham; mix well. Spoon into noodle crust.
How to tell if it’s done. Baked custards should be removed from the oven before the center is completely set. The center will jiggle slightly when dish is gently shaken. Custard will continue to “cook” after it’s removed and center will firm up quickly. Overbaked custard may curdle. The knife test: Insert knife about 1 inch from the center. If knife is clean when pulled out, the custard is done. If any custard clings to the blade, bake a few minutes longer and test again.