Baked Italian-Style White Bean and Rosemary Casserole
A hearty, warm casserole featuring tender white beans, fresh rosemary, and a savory tomato base, perfect for a comforting vegetarian meal. This Italian-inspired vegetarian recipe, ready in about 45 minutes, pairs canned white beans (drained and rinsed), olive oil, yellow onion (diced) for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. 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 cups canned white beans (drained and rinsed)
- 3 tbsp olive oil
- 1 medium yellow onion (diced)
- 4 garlic cloves (minced)
- 1.5 cups canned crushed tomatoes
- 2 tbsp fresh rosemary (chopped)
- 1 tsp salt
- 1/2 tsp black pepper
- 1/3 cup grated Parmesan cheese
- 1/4 cup dry Italian bread crumbs
The 9x13 baking dish we’d bake this in → Best Bakeware for 2026: Top Picks + Buying Guide
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Equipment for this recipe
Tools this recipe's steps call for, with a link to each on Amazon.
Instructions
- Step 1: Preheat the oven to 375°F. Heat 3 tbsp olive oil in a large skillet over medium heat. Add 1 medium diced yellow onion and sauté for 5 minutes until translucent and fragrant.
- Step 2: Add 4 minced garlic cloves to the skillet and cook for 1 minute until aromatic but not browned. Stir in 2 cups drained and rinsed canned white beans and 1.5 cups canned crushed tomatoes.
- Step 3: Mix in 2 tbsp chopped fresh rosemary, 1 tsp salt, and 1/2 tsp black pepper. Simmer the mixture for 8 minutes until slightly thickened and the flavors meld.
- Step 4: Transfer the bean mixture into a 9x9-inch baking dish. Sprinkle 1/3 cup grated Parmesan cheese evenly over the top, followed by 1/4 cup dry Italian bread crumbs.
- Step 5: Bake uncovered for 20 minutes until the top is golden and bubbling. Let cool 5 minutes before serving.








