Herb-Roasted Vegetable and Mushroom Pie
A comforting pie featuring garden-fresh vegetables and mushrooms, bound in a creamy sauce and topped with golden mashed potatoes, inspired by cottage garden abundance. This british-inspired vegetarian (vegetarian) ready in about 75 minutes layers butter, large, diced yellow onion, diced carrots into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 283 calories and feeds 6, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 2 tbsp butter
- 1 large, diced yellow onion
- 2, diced carrots
- 2 stalks, diced celery
- 8 oz, sliced mushrooms
- 3 cloves, minced garlic
- 1/4 cup all-purpose flour
- 1 1/2 cups vegetable broth
- 1 tsp dried thyme
- 1/2 tsp salt
- 1/4 tsp black pepper
- 2 cups, cooked and mashed potatoes
- 1/2 cup, shredded cheddar cheese
Instructions
- Step 1: Preheat oven to 375°F (190°C). Melt 2 tbsp butter in a large pot over medium heat. Add 1 diced yellow onion, 2 diced carrots, and 2 diced celery stalks, cooking until softened, about 8 minutes.
- Step 2: Add 8 oz sliced mushrooms and 3 minced garlic cloves, cooking for 3 minutes until mushrooms release liquid.
- Step 3: Stir in 1/4 cup all-purpose flour, 1 tsp dried thyme, 1/2 tsp salt, and 1/4 tsp black pepper, cooking for 1 minute.
- Step 4: Gradually stir in 1 1/2 cups vegetable broth until smooth. Simmer for 5 minutes until thickened.
- Step 5: Transfer vegetable mixture to a 9x13-inch baking dish. Spread 2 cups mashed potatoes evenly over the top. Sprinkle with 1/2 cup shredded cheddar cheese.
- Step 6: Bake for 25-30 minutes until topping is golden and filling bubbles around the edges.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Herb-Roasted Vegetable and Mushroom Pie take to make?
Total time is about 75 minutes (25 min prep + 50 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.
How do I store leftover Herb-Roasted Vegetable and Mushroom Pie?
Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.
Can I substitute ingredients in Herb-Roasted Vegetable and Mushroom Pie?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Herb-Roasted Vegetable and Mushroom Pie for a different number of people?
The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
Is Herb-Roasted Vegetable and Mushroom Pie vegetarian?
Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
This pie was a hit at my dinner party! The herbs really elevated the vegetables and mushrooms.
- ★★★★★
Loved the simplicity and the delicious taste. My family asked for seconds!
- ★★★★★
Perfect for a cozy Sunday. The crust was flaky and the filling was so flavorful.
