Oven-Baked Mashed Potatoes and Vegetable Gravy

The aroma of roasting vegetables and bubbling gravy instantly transports me back to my grandmother’s kitchen. Every Sunday, after church, her table would groan under the weight of a comforting feast, and this oven-baked mashed potato dish was always the star. I can still picture her, apron dusted with flour, carefully layering the creamy potatoes, savory gravy, and golden cheese. It wasn’t just a meal; it was love on a plate, a warm hug against the sometimes-harsh realities of life.

Recipe Overview

• Prep Time: 20 minutes
• Cook Time: 30 minutes
• Total Time: 50 minutes
• Servings: 6
• Dietary Type: Vegetarian

Ingredients

• 2 lbs Simply Potatoes Traditional Mashed Potatoes
• 21 ounces vegetable stock
• 21 ounces whole milk
• 2 tablespoons butter
• 1/2 cup flour
• 1 egg yolk, lightly beaten
• 1 carrot, peeled and cut into 1/4-inch slices
• 1/2 red onion, diced
• 1 cup broccoli florets
• 1/2 cup frozen green peas
• 6 medium garlic cloves, minced
• 1 large tomato, diced
• 1 cup spinach, chopped
• 1 small red bell pepper, cut into 1/2-inch cubes
• 1/2 tablespoon thyme
• 1 teaspoon oregano
• 1/2 teaspoon black pepper
• 1/4 teaspoon cayenne pepper
• 5 tablespoons light soy sauce
• 3/4 cup breadcrumbs (packaged or fresh)
• 1 cup cheddar cheese, grated

Equipment Needed

• Large saucepan
• Whisk
• Large casserole dish (at least 10″ x 13″ and 2″ deep)

Instructions

1. Begin by preparing the gravy. In a large saucepan, melt 2 tablespoons of butter over medium-high heat. Add the diced red onion, minced garlic, and carrot slices, and cook for about 3 minutes, stirring occasionally, until the onions begin to soften and become fragrant.

2. Add the red bell pepper cubes and diced tomato to the saucepan, and continue to cook for another 3 minutes, stirring occasionally, until the peppers are slightly softened and the tomatoes have released some of their juices.

3. Pour in equal parts vegetable stock and whole milk, ensuring you use the full 21 ounces of each. Turn the heat up to high and bring the mixture to a boil.

4. Once boiling, add the chopped spinach, frozen green peas, and broccoli florets to the gravy. These vegetables will cook quickly in the hot liquid.

5. While the gravy is still boiling, gradually whisk in the 1/2 cup of flour. Be sure to whisk constantly to prevent lumps from forming. Continue whisking until the flour is fully incorporated and the gravy begins to thicken.

6. Reduce the heat so that the gravy is simmering moderately but constantly. The gravy should be gently bubbling. Stir in the seasonings: 1/2 tablespoon of thyme, 1 teaspoon of oregano, 1/2 teaspoon of black pepper, and 1/4 teaspoon of cayenne pepper. Let the gravy simmer for about 10 minutes, stirring occasionally, to allow the flavors to meld and the gravy to thicken further.

7. Temper the egg yolk before adding it to the gravy. Ladle out about 1/4 cup of the hot gravy and very gradually whisk it, by small spoonfuls, into the lightly beaten egg yolk. This gradual heating up prevents the egg yolk from scrambling when added to the hot gravy.

8. Once your egg yolk mixture is tempered, stir it into the gravy. Then, add 5 tablespoons of light soy sauce to the gravy. The amount of soy sauce may vary depending on personal taste, so adjust to your preference.

9. Let the gravy continue to simmer and thicken (the thicker, the better!) while you prepare the mashed potatoes.

10. To prepare the Simply Potatoes Traditional Mashed Potatoes, peel back the plastic at the corner of the package and heat on high for 3 minutes in the container in the microwave.

11. Remove the plastic and stir the mashed potatoes. Then, continue to microwave for another 1 minute to ensure they are heated through.

12. Once the potatoes are ready, season them with salt and pepper to taste.

13. Grease a large casserole dish (at least 10″ x 13″ and 2″ deep) with butter or cooking spray.

14. Pour the heated mashed potatoes into the prepared casserole dish and smooth them out into one even layer.

15. Sprinkle 1/2 cup of the grated cheddar cheese evenly over the mashed potatoes.

16. Pour the vegetable gravy over the potatoes and cheese layer, ensuring it’s evenly distributed.

17. Sprinkle the 3/4 cup of breadcrumbs over the gravy, followed by the remaining 1/2 cup of grated cheddar cheese.

18. Bake uncovered at 425 degrees Fahrenheit for 20-30 minutes. Check frequently after 20 minutes to ensure that the cheese does not burn. The dish is ready when the cheese is melted, bubbly, and lightly golden brown, and the gravy is heated through.

19. Remove from the oven and allow to sit for at least 5 minutes before serving. This allows the dish to set slightly and the flavors to meld further.

Expert Tips & Tricks

• Gravy Consistency: For an extra thick gravy, consider adding a cornstarch slurry (1 tablespoon of cornstarch mixed with 2 tablespoons of cold water) to the gravy during the last few minutes of simmering.
• Cheese Selection: Feel free to experiment with different types of cheese. A blend of cheddar and Monterey Jack, or even a sharp provolone, would add interesting flavor dimensions.
• Make-Ahead Option: The gravy can be prepared a day in advance and stored in the refrigerator. Reheat gently before assembling the casserole.
• Breadcrumb Boost: Toast the breadcrumbs in a dry skillet with a little melted butter and garlic powder for added flavor and crunch.
• Vegetable Variation: Don’t be afraid to swap out or add other vegetables like mushrooms, zucchini, or corn.

Serving & Storage Suggestions

Serve this comforting casserole hot, straight from the oven. It pairs beautifully with a side salad or steamed green beans. Leftovers should be cooled completely before storing in an airtight container in the refrigerator for up to 3 days. To reheat, bake in a preheated oven at 350 degrees Fahrenheit until heated through, or microwave in individual portions. The dish can also be frozen for up to 2 months. Thaw completely in the refrigerator before reheating.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	326 kcal	N/A
Calories from Fat	137 g	42%
Total Fat	15.3 g	23%
Saturated Fat	8.8 g	44%
Cholesterol	68.1 mg	22%
Sodium	1175.1 mg	48%
Total Carbohydrate	32.7 g	10%
Dietary Fiber	3.4 g	13%
Sugars	9.9 g	39%
Protein	15.4 g	30%

Variations & Substitutions

• Vegan Option: Substitute the whole milk with unsweetened almond or soy milk, the cheddar cheese with a vegan cheese alternative, the butter with vegan butter or olive oil, and omit the egg yolk.
• Gluten-Free: Use gluten-free flour or a cornstarch slurry to thicken the gravy, and ensure your breadcrumbs are gluten-free.
• Spicy Kick: Add a pinch of red pepper flakes to the gravy for an extra bit of heat.
• Herby Delight: Mix fresh herbs like parsley, chives, or rosemary into the mashed potatoes for added flavor.

FAQs (Frequently Asked Questions)

Q: Can I use fresh potatoes instead of pre-made mashed potatoes?
A: Yes, you can! Simply boil peeled and quartered potatoes until tender, then mash them with butter, milk, and seasonings before adding them to the casserole.

Q: Can I add meat to this dish?
A: Absolutely! Cooked and crumbled sausage, ground beef, or shredded chicken would be delicious additions. Add them to the gravy or layer them between the potatoes and gravy.

Q: Can I prepare this dish in advance?
A: Yes, you can assemble the entire casserole ahead of time, cover it tightly, and refrigerate it for up to 24 hours before baking. You may need to add a few extra minutes to the baking time to ensure it’s heated through.

Q: How do I prevent the cheese from burning?
A: If the cheese starts to brown too quickly, tent the casserole dish with aluminum foil during the last few minutes of baking.

Q: What can I use instead of breadcrumbs?
A: Crushed crackers, crushed cornflakes, or even potato chips can be used as a substitute for breadcrumbs.

Final Thoughts

I hope you’ll find as much comfort and joy in this oven-baked mashed potatoes and vegetable gravy as my family has over the years. It’s a dish that’s easy to adapt to your own tastes and preferences, so don’t be afraid to experiment and make it your own. Whether you’re serving it as a weeknight dinner or a special occasion side dish, I’m confident it will be a crowd-pleaser. Enjoy, and feel free to share your creations and feedback!