Spanish-Style Brown Butter Mushroom Shepherd's Pie
This comforting casserole features smoky mushrooms and rich brown butter mashed potatoes, delivering deep flavors and a warm, homestyle feel.
Ingredients
For the Brown Butter Potatoes
- 2 pounds potatoes, peeled and cut into large cubes Choose starchy potatoes like Russet for best results.
- ⅓ cup unsalted butter Brown the butter for flavor.
- 1 teaspoon fresh thyme leaves Adds herbal notes to the potatoes.
- 1 clove garlic, finely minced Enhances the savory flavor.
- Salt, to taste Season according to preference.
For the Spanish Mushroom Filling
- 1 tablespoon olive oil For sautéing.
- 1 large onion, finely diced Adds sweetness and depth to the filling.
- 1½ pounds mushrooms (cremini, button, or shiitake), halved or quartered Choose your favorite type of mushrooms.
- 1½ pounds ground beef, turkey, or chicken Make it vegetarian by substituting with lentils or beans.
- 2 large carrots, diced Provides sweetness and color.
- 1 red bell pepper, diced Adds flavor and vibrant color.
- 4 cloves garlic, minced Fills the dish with savory goodness.
- ¼ cup tomato paste Contributes to the richness of the filling.
- 2 tablespoons Worcestershire sauce (or coconut aminos for a vegetarian option) Enhances the savory flavor profile.
- 1 teaspoon smoked paprika Gives the dish a smoky flavor.
- ½ teaspoon ground cumin Adds warmth and earthiness.
- ½ teaspoon dried oregano Classic herb for flavor.
- Salt and freshly ground black pepper, to taste For seasoning.
Optional Garnish
- Fresh parsley or thyme leaves For a fresh finish.
- Drizzle of olive oil To drizzle before serving.
Instructions
Cook the Potatoes
- Place the potatoes in a large pot, cover with cold water, and season generously with salt.
- Bring to a boil and cook until tender, about 15 minutes.
- Drain, return to the pot, and mash until smooth.
Make the Brown Butter
- While the potatoes cook, melt the butter in a small saucepan over medium heat.
- Continue to cook, swirling occasionally, until the butter turns golden brown and gives off a nutty aroma (about 3–4 minutes).
- Remove from heat and stir in thyme and minced garlic.
- Pour the mixture over the mashed potatoes, mix well, and season with salt to taste. Set aside.
Prepare the Filling
- Preheat oven to 350°F (175°C).
- Heat olive oil in a large skillet over medium-high heat.
- Add the onion, bell pepper, and carrots; cook for 5–6 minutes, until slightly softened.
- Add the mushrooms and cook for another 8–10 minutes, until browned and their liquid has evaporated.
- Add the ground meat and cook until fully browned, about 5 minutes.
- Stir in the garlic, tomato paste, Worcestershire sauce, smoked paprika, cumin, and oregano.
- Cook for 2–3 minutes, stirring well, to allow the flavors to develop.
- Season with salt and black pepper to taste.
Assemble the Shepherd’s Pie
- Spoon the Spanish mushroom and meat mixture into a 9×13-inch ovenproof baking dish.
- Spread the brown butter mashed potatoes evenly over the top, smoothing them with a spatula.
Bake
- Bake for 30 minutes, or until the filling is bubbling around the edges and the top is lightly golden.
- For a crisp finish, broil for an additional 2–3 minutes, watching closely.
Serve
- Let the pie rest for 5 minutes before serving.
- Garnish with fresh parsley or thyme, and drizzle with a touch of olive oil for a glossy finish.
- Enjoy warm — each bite delivers creamy potatoes, smoky mushrooms, and a hint of Spanish spice.
Notes
Store leftovers in the refrigerator for 3-4 days in an airtight container. For freezing, assemble in a freezer-safe dish and cover well for up to 3 months.